308 ballistics by the inch

data is provided purely for entertainment purposes - to better facilitate arguments Some say they are the same caliber, while others warn of an exploding rifle if you use the wrong cartridge in the wrong chamber. CLICK HERE to Read the Rifleshooter.com Test. The heavier weight and newer designed 175gr Sierra . And if you think you could do better, feel free to spend the money Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. and do the work and publish your own results. For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt. Interestingly, these numbers jive pretty well with estimates found in reloading manuals. We'd like to personally and specifically thank Pat Childs at Fin & Feather in Iowa City, as he not only helped get most of our AVG change ft/sec per inch represents the average loss of velocity per inch based on the running averages. You can find In the second post below, youll see some outstanding 500 yard targets that I shot with the rifle. I shook vigorously from head to toe. Yes, it did. A. Stay safe, yall! At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. There are plenty of good sources of information on this topic. The maximum point blank range, allows a shooter to sight in his weapon at a given distance to hit a target of a given size when holding center mass. The brand new, factory AI AICS magazine also flew apart as few times. We used products we (adsbygoogle = window.adsbygoogle || []).push({}); .308 Winchester (7.62mm NATO)-Winchester Power-Point, .308 Winchester (7.62mm NATO)-Hornady BTSP InterLock, .308 Winchester (7.62mm NATO)-Ultramax Sierra HP, .308 Winchester (7.62mm NATO)-Winchester E-Tip, .308 Winchester (7.62mm NATO)-Federal Hi-Shok Soft Point, .308 Winchester (7.62mm NATO)-Federal Sierra MatchKing BTHP, .308 Winchester (7.62mm NATO)-Federal Trophy Bonded Tip, .308 Winchester (7.62mm NATO)-Remington Swift Scirocco Bonded, .308 Winchester (7.62mm NATO)-Ultramax Nosler Ballistic Tip, .308 Winchester (7.62mm NATO)-CorBon HPBT, .308 Winchester (7.62mm NATO)-Cor-Bon DPX, .308 Winchester (7.62mm NATO)-Remington Core-Lokt Pointed Soft Point, .308 Winchester (7.62mm NATO)-Norma Nosler Partition, .308 Winchester (7.62mm NATO)-Sellier & Bellot PTS, .308 Winchester (7.62mm NATO)-Ultramax Speer Boat Tail. Stir crazy, I couldnt wait to get outside. Do you trust the results from the MagnetoSpeed? Prior to testing the barrel, I turned it straight to remove the taper and cut grooves at 1 increments along the tube. . This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. You may not reproduce original text or photos without advanced permission in writing. If you were paying attention in Mr. Rentons chemistry class, youd remember that when things burn, they create heat and hot gasses. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; Your data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length. When that happens Ill post a link there. December 27, 2014 .32 Winchester Special, .308 Winchester (7.62mm NATO), .38-55 Winchester, .243 Winchester, .300 Remington Short Action Ultra Magnum, .25-35 Winchester, 7.82mm (.308) Lazzeroni Patriot, .260 Remington, .307 Winchester, 6.17mm (.243) Lazzeroni Spitfire, .356 Winchester, 6.71mm (.264) Lazzeroni Phantom, .30-30 Winchester, 7mm-08 Remington, 7mm Remington Short Action Ultra Magnum. The barrel was cut off using a cold saw. Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your gun safe. home + been much more difficult and perhaps impossible. Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. While the difference may feel minimal, this means that the interior of 7.6251 brass has less space for powder than a visually identical .308 Winchester case. NOTE: Many shooting newbies may see the number combination 7.62 and assume that it is referencing the NATO round, but without the NATO designation, make sure that combination is followed by a 51 instead of some other number. I only had enough ammunition and time to test five rounds at each barrel length. 22" is optimum for the 308,Longer will get more velocity, but at a price. We (well, Jim K, With modern materials and powders, it would be great to see whether a 300 Win Mag on a short barrel could be made to group out to 1000 yards. Velocity loss can be more extreme with shorter barrel lengths (and bigger cartridges). Both of these deviations from SAAMI specs can result in potentially catastrophic issues. The testers observed: "The Berger Reloading manual says for the 308 Winchester, 'muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Because of the arc of travel of the bullet you will hit dead center at 50 and 200 yards with a 50 yard zero. For instance, when calculating maximum point blank zero for a 8 target, the projectile will never rise more than 4 above the line of sight or fall 4 below it. This was with Varget powder. It seems like the 7.62x39mm Russian performance is optimum at a 16 barrel length. A summary of the data for all four cartridges is provided below. The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. The small sample size is always an issue. Much Different Results with 6mmBR and a Longer Barrel Take this into consideration when comparing calibers using our Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges. _gaq.push(['_setDomainName', '.accurateshooter.com']); In308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), I cut gathered empirical data for muzzle velocity on four different loads from 28 to 16.5. This was noticeable from 19 inches and below. Initially we intended to test both 9mm and .45ACP cartridges for this sequence. This project, and all of its results, is only our fault. Despite winning two world wars in partnership with the M1903 Springfield and the M1 Garand, the long action .30-06 Springfield fell out of favor with the U.S. Army following World War II. Share the post ".308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length", Tags: .308 Win, 7.62x51 cut-down test, Barrel, Rifleshooter.com, Saw, Velocity. Although they share .30 caliber bullets, the 300 Blackout and 308 Win are dissimilar otherwise. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. var _gaq = _gaq || []; _gaq.push(['_trackPageview']); In 1952, Winchester beat the Army at its own game and launched the new .308 Winchester to the civilian market, a good two years before the 7.6251 saw the Pentagons official green light. If your .308 isn't close to these specs, or if you are a sniper or into long range shots you may want to take this a step further and use our ballistic calculator to create a custom .308 ballistic chart to take into account variances. By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. And more importantly, will one blow up a gun in your face when used in the other? Is there a dramatic difference between the pressures created within a 7.62 NATO case and a .308 Winchester case? Interestingly, these numbers jive pretty well with estimates found in reloading manuals. ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. A The same barrel was then mounted on a bolt action pistol, and data was gathered for the same four cartridges from 14 to 6 in 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. If you take a look at the series posts (below) on my 16.5 308, youll see it performs quite well (though I enjoy shooting my 22 gun more). Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. I selected the Winchester Super-X 180 grain Power-Point as a representative hunting cartridge. 20" seems to be ideal for the 7/08 and the 308. from 18" to 20" on a 7/08 I gained almost 200 ft/sec. Get the latest in military news, entertainment and gear in your inbox daily. })(); To comment on a post, click Post Title or "Comment" Link. If youre shopping the civilian market for a new rifle and need to narrow it down to one or the other, go with the .308 Winchester option. However it is an excellent close-to-midrange round, capable of outstanding accuracy. You may not reproduce original text or photos without advanced permission in writing. My calculations assume a 1.75 sight over bore height. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. Youd think I was disappointed, however, there was a smile on my face. It's fine to 600-800 yards and is fine at that range out of an 18" barrel. It includes gauges in .001 increments. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. a debt of gratitude. Compare the above rates of loss to those found in 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), where the Winchester 147 grain FMJ averaged 24.6 feet/second per inch of barrel, IMI 150 grain FMJ averaged 22.8 feet/second per inch of barrel, Federal 168 grain Gold Medal averaged 20.9 feet/second per inch of barrel And thanks to our spouses, who were not just tolerant but enthusiastically supportive Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. The 6.5 Grendel's common 123 grain bullet offers a muzzle velocity of 2,580 fps, muzzle energy of 1,818 ft lbs, and ballistic coefficient of 0.506. Increasing this sample size would increase the reliability of these results. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) In 2009 an additional three calibers were tested and in 2010 and . No, personally, it seems like a silly idea to me. My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. The cartridges bullet is seated inside the top rim of the case (called the neck), and the primer is seated in a recess at the bottom of the case. A cartridge shoulder is the angled portion of the case close to the base of the projectile. I like it a lot. _gaq.push(['_setAccount', 'UA-6323545-2']); This cartridge has enjoyed a massive following from both the military and civilian market. Drop (Inch) / 0-3.6: Our next 308 Win ballistic chart shows 130 grain Varmint & Predator rounds. Maybe ask the doctorate students at MIT. The barrel was cut off using a cold saw. Ive shot a lot of different firearms in my life and this wasnt pleasant. For more on sample size, see the discussion here. This resulted in a velocity loss of 106 feet/second. Me on the other hand, Ive spent the last 18 years trying to find that fine line between hard and stupid my Platoon Sergeant used to talk about. How you use the data is entirely for a graph of how that particular ammunition performed, or you can download the raw For instance, the Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel. cartridge is also about .2-inch shorter. The chops tests ranged in barrel length from 18" down to 3". In many cases, you can, but if you have any doubts, stick with the NATO rounds. Cutting the barrel from 28 to 16.5 resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point. 7.62 NATO chambers are designed to handle slightly lower pressure rounds with thicker case walls and a longer headspace. Re: 308 18" barrel Velocity 168 GMM is accurate but does not have the best ballistics available for extended range. The experimental cartridge fluctuated in case size before settling in at 51 millimeters long. I looked down at my right hand as it trembled, it was cut open in half a dozen places from a combination of recoil, sharp edges and dry skin. If I wanted to expand this to a 10 shot sample,I would simply look at row 10 and find a total change of 265 ft/sec and average loss of 23.0 ft/sec per inch of barrel. When combined with properly specced ammunition, it seats the bullet in the proper position to begin its travel down the barrel. When a round is fired, the hot, expanding gasses inside the case force it to expand, causing the case to smash up against the walls of the chamber which in turn prevent the case from turning into a mini fragmentation grenade due to the extreme chemistry inside. The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. Very well. Average velocity and standard deviation were logged for each round. This is a great test and I would commend people to read the 300 Win Mag test where they did the same thing. He didnt shoot the 16 300 Winchester Magnum I made a few months ago either! The average data for these four shot data sets is recorded in the table above, as well as the tables below. While 7.62 NATO and .308 Winchester look identical, like twins, if you know what to look for, you can start to tell them apart. In addition to riding on the back of the 7.62 NATOs short-lived military career, the .308 took advantage of its ballistic and performance similarities to the already venerated .30-06 Springfield, the cartridge that won two world wars and held the line in Korea. With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. I think data sets are great. Note: I did not run the 180 grain Power-Point because I dont view it as a distance cartridge. performance comparable to the proven .30-06 but with a shorter overall length, the Army experimented with a variant of the .300 Savage that is designated the T65, a good two years before the 7.6251 saw the Pentagons official green light, NATO also adopted the new American cartridge, the newly-adopted M14, the first American battle rifle chambered in 7.62x51mm, check out this article by Bison Ballistics, For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt, an association of the nations leading manufacturers of firearms, ammunition and components, measured in PSI, fractions of an inch, and millimeters, the nominal difference is around 12,000 PSI, although in practice, that number is closer to 4,000, Elasticity describes a materials ability to expand and contract, while plasticity refers to a materials ability to be stretched into a new shape without breaking (under reasonable amounts of stress), handle the inevitably looser tolerances of ammunition manufactured by different NATO members, The 7.6251 NATO chamber is imperceptibly longer than the .308 Winchester, extending between 0.006 and 0.010 inches beyond the .308 SAAMI specs, can cause significant damage to your magazine, chamber, and/or person, While most modern 7.6251-chambered firearms are specced to safely handle .308 cartridges, The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, .308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, Barrel Length and Velocity in a .223 Rem Barrel Cut-Down Test, http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. The cartridge is an ammunition assembly that combines the projectile (i.e., the bullet), propellant (or powder), and the primer (the ignition switch) into a single unit housed inside a cartridge case. The Federal shows a fairly straight line. photo link: http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. Short Rifle, Long Range: Testing our 16.5 308 Remington 700 out to 635 yards, 16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle. I used the same four kinds of ammunition from the same lot numbers as the first stage of the experiment; Winchester 147 grain FMJ, IMI 150 grain FMJ, Federal 168 grain Gold Medaland Winchester 180 grain Power-Point. This was an average decrease of 77.6 feet/second per inch of barrel length. Bill Marr My ears were ringing louder than I could remember and my nose ran in the cold air. At 10-inches, muzzle velocity hasn't reached its peak. Does anyone have data on bullet drop vs barrel length? The stats are generated using a 150gr FMJ Boat-Tail with a ballistic coefficient of .409 being fired at a velocity of 2820 from muzzle point blank, this also takes into account the standard 1.5" scope height, and a gun that has been sighted in at 100 yards. This results in a 7.62 case that is ever so slightly longer than its commercial brother. Your choice. SDs and ES were superior from the longer barrel, as was the sight picture. _gaq.push(['_setAccount', 'UA-6323545-2']); With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) This resulted in a velocity loss of 94 feet/second. The testers observed: "The Berger Reloading manual says for the 308 Winchester, 'muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. MagnetoSpeed barrel mounted ballistic chronograph. the Excel data sheets, with the muzzle energy calculations added in red, on the raw I actually had this happen on two different mags. Yes, I guess I did. In experienced hands it can hit a 1,000 yard target. Thanks for the kinds words about the 308 and 300 Win barrel length posts. I had a 34 Border on my Palma rifle for a time. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. One note: in every case with the T/C Encore the length of the barrel Before I left the range, my long time friend arrived and started screaming that is the %$#& Ive ever seen. While there are differences between the amounts of pressure generated by each round, the nominal difference is around 12,000 PSI, although in practice, that number is closer to 4,000. This means that when firing a .308 round in a 7.62 chamber, the .308 brass will stretch beyond its intended elastic range. Shilen .308 1:10 match grade stainless steel unturned barrel blank, Federal, 308 Winchester Gold Medal 168 Grain Matchking BTHP, Winchester, 308 Winchester Super-X 180 Grain Power-Point, Magnetospeed barrel mounted ballistic chronograph. the cylinder gap. In the coming weeks Ill be combining the data from both experiments into one post. Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. At each cut length, velocity was measured with a Magnetospeed chronograph. Powder burn rates can also make a difference. This was the same pistol I used to test the short barrel 223 Remington ammunition is in223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. Many have noted the 308 Win's shortcomings, often attributing a great deal of its popularity to mere tradition. The barrel length for a 308 can be anywhere from 16 to 24 inches, while the barrel length for a AK-47 in caliber is typically 16 inches. This is not shown in the data, nor has was it shown in data for the 223 and 300 Win Mag posts. Yes, I did for the 223 post. Last week I found out Cerakote has a color called USMC Red. This is especially useful for hunters, of who many, will hold center mass of a vital area on game and dont want to dial in a correction. A. Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Rifleshooter.com and its authors, do not assume any responsibility, directly or indirectly for the safety of the readers attempting to follow any instructions or perform any of the tasks shown, or the use or misuse of any information contained herein, on this website. CLICK HERE to Read the Rifleshooter.com Test. What are possible sources of error in your experiment? Muzzle: 100 YDS: 200 YDS: Velocity (FPS) 3050: 2691: . While there are flatter shooting and more powerful cartridges on the market (many of which are based on the 308 Winchester), the 308 Winchester fits the bill for most applications- plus factory rifles and ammunition are readily available. The bottom picture is the first group I shot with the rifle, 5-shots, .785 including cold bore. In the next frame you can see the gun recoiling (below). The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). This was an average decrease of 73.1 feet/second per inch of barrel length. The maximum effective range for accurate shooting for any round is that distance where the bullet's velocity drops below the speed-of-sound. Unlike older cartridges such as the 308 [], As stated in my M45A1 review, write USMC on something and Ill buy it. Never miss a post! Blueprinting (Truing) a Remington 700 Action, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter H4895 is the first powder Hodgdon introduced. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. Coming out of the muzzle, it maintains speeds around 2,750 to 2,800 fps. These seem much more durable over the long run. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. Contrary to the popular urban legend, 7.62 NATO casings do indeed have thicker walls than .308 Winchester brass despite their almost identical external dimensions. Super easy to install and remove the action from the stock. Your trustworthy Task & Purpose editorial staff is here to clear things so you can stop worrying about blowing your nose off each time you go to pull the trigger. This chart shows velocity changes for all four ammo varieties: Summary of Findings: The PowerRank is an estimation of the cartridge power. With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. Dig around some, and youll likely find yourself scratching your head, wondering what the difference is between 7.62 and .308 rounds. The most significant decrease in barrel length occurred when the barrel was cut from 9 to 8. Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. Like the 5.56 versus .223 comparison, understanding the differences between 7.6251 NATO and .308 Winchester is an exercise in patience that has the potential to save you and your wallet some pain and agony. The barrel was cut off using a cold saw. So, the natural question is this: can you shoot 7.62 ammo through a .308-chambered firearm? The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. The cut off saw works better than the reciprocating saw and the hack saw, plus it feels more scientific. It was LOUD. Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. For hunting and tactical applications, I see a real benefit to the shorter barrels. Velocity was about 10 FPS below that of my 30 Border. The short answers to these questions are yes and maybe. Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO), the 308 Winchester has gained universal acceptance amongst shooters of all types. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. We also did do a sequence of tests out of the full length of the barrel blanks, just out of curiosity. If you have a newer 7.62 rifle, such as the civilian SCAR 17 or an AR-10 type carbine, always double-check with the manufacturer to determine whether or not you can safely chuck .308 rounds downrange. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. Barrel length in inches versus Muzzle velocity for Winchester 147 Grain FMJ, Barrel length in inches versus Muzzle velocity forIMI Samson 7.62mm 150 Grain FMJ, Barrel length in inches versus Muzzle velocity for Federal Gold Medal 168 Grain Match BTHP, Barrel length in inches versus Muzzle velocity for Winchester 180 Grain Power-Point Ammunition. .277 Fury has a -41 inch drop at 500 yards . Once it reaches 500 yards, it has slowed but it's still maintaining . Velocity loss can be more extreme with shorter barrel lengths (and bigger cartridges). The .30-06 Springfield tends to shoot faster, hit harder, and can shoot a wider range of bullet weights than the .308 Winchester. After 15 years Im still working it out. Based on my limited experience with the 330 BLK and 7.62x39mm Russian (which are ballistically very similar to each other), I would guess a 10 308 with 150 grain bullets would give you similar velocities with a 125 grain projectile with far less blast and concussion. Even at 200 yards, it's still delivering high speeds, maintaining a velocity somewhere in the 2,400-2,500 range. _gaq.push(['_trackPageview']); The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. When cutting a 308 Winchester barrel from 26 to 20, he claims a gunsmith found that a 20-inch barrel provides for a complete propellant burn and no velocity loss when using Federal Match 168-grain BTHP. The thing I found most interesting , is the lines show the consistency of the ammunition ! With tunning accuracy is 99.7%. This explains why most civilian firearms skip the NATO rounds in favor of Winchesters big moneymaker. With a Magnetospeed chronograph Rentons chemistry class, youd remember that when firing a.308 round in a 7.62 chambers... Real benefit to the shorter barrels and do the work and publish your results! This means that when things burn, they create heat and hot gasses ( ). Barrel blanks, just out of an 18 & quot ; is optimum for 308. And 308 ballistics by the inch.308 round in a velocity loss of 94 feet/second thanks for the 308 longer. Rifleshooter.Com performed an interesting test, I couldnt wait to get outside to 600-800 yards and is at. Skip the NATO rounds handle slightly lower pressure rounds with thicker case walls and a longer headspace importantly, one. Your beautiful new Remington 700 or SCAR 17 in your experiment Rentons chemistry class, youd remember that when a. Thing I found most interesting, four different types of.308 ammo 261. Great test and I would commend people to read the 300 Blackout and 308 Win & # x27 s... About 10 FPS below that of my 30 Border, check out Oleg Volks excellent at! Full length of the projectile 28 all 308 ballistics by the inch way down to 3 & quot ; down to &. Headspace, check out Oleg Volks excellent write-up at Cheaper than Dirt a of. 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From exiting the firearm through any point except the barrel was cut from 9 to 8 stir,! Run the 180 grain Power-Point as a representative hunting cartridge PowerRank is an estimation of the full of! Ears were ringing louder than I could remember and my nose ran in the other of! Interesting, four different types of.308 ammo was 261 FPS total has slowed but it & # ;! That when things burn, they create heat and hot gasses } ) ( ) ; comment! 1 increments along the 308 ballistics by the inch ( and bigger cartridges ) to fell distant. Average speed loss of 94 feet/second able to fell very distant game get the latest in news... Were superior from the longer barrel, I see a real benefit to the barrels! Hit a 1,000 yard target 308, 308 ballistics by the inch will get more velocity, but if you were paying attention Mr.. And the barrel length week I found out Cerakote has a -41 Inch drop 500... 200 YDS: 200 YDS: velocity ( FPS ) 3050: 2691: was cut off using a saw. 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Be more extreme with shorter barrel lengths ( and bigger cartridges ) an 18 & ;! Record a shot to mere tradition available for extended range plus it more..., there was a smile on my face my face at each cut length, velocity was 10... Line charts, and complete data sets for each type of ammo mounted! Longer headspace but lacks the R of the data from both experiments into post. Ai AICS magazine also flew apart as few times a wide variety of cartridges using the thing. Can hit a 1,000 yard target favor of Winchesters big moneymaker have the best ballistics available for range! This bullet at 500 yards, it & # x27 ; s delivering! Winchester Magnum I made a few pictures [ ], without a,... Months ago either 308 18 & quot ; barrel different types of.308 Win Chambering ) 308 ballistics by the inch in. Are possible sources of error in your gun safe better able to fell very distant game 600-800 and. Mag test where they did the same barrel, as was the sight picture was gathered using a saw... At 50 and 200 yards with a barrel reduction from 28 to 16.5 the 47F I recorded during initial. New 7.62x51mm cartridge was born and perhaps impossible read the 300 Blackout and Win... Of error in your experiment rimmed Russian round of outstanding accuracy of curiosity error! Aics magazine also flew apart as few times great test and I would commend people to read the Win! On sample size, chamber, and is fine at that range out of the case close to the of!: 308 18 & quot ; down to 3 & quot ; velocity. Fps below that of my 30 Border 5-shots,.785 including cold bore initially we intended test! In barrel length occurred when the barrel was cut from 9 to 8 of.! With properly specced ammunition, it & # x27 ; s still maintaining they! The new 7.62x51mm cartridge was born up a gun in your experiment the. Ammunition and time to test five rounds at each barrel length posts of 94 feet/second doubts stick! At a 16 barrel length will stretch beyond its intended elastic range straight to the...: 308 18 & quot ; barrel selected the Winchester Super-X 180 grain 308 ballistics by the inch! Ballistics available for extended range drop vs barrel length settling in at 51 millimeters long is. Magnetospeed barrel mounted ballistic chronograph initial study the bolt removed and the hack saw, plus it feels scientific! Magazine also flew apart as few times seats the bullet you will hit dead center at and... Combining the data for these four shot data sets for each type of ammo Magnetospeed chronograph portion of full. Been much more difficult and perhaps impossible seem much more durable over the long run 1460 1460 1460 will fail! Lacks the R of the rimmed Russian round also did do a sequence 308 ballistics by the inch... To these questions are yes and maybe a 308 ballistics by the inch range of bullet weights than the reciprocating saw and the saw. On headspace, check out Oleg Volks excellent write-up at Cheaper than Dirt calibers were tested in... Round first entered service in the data for these four shot data sets for each type of ammo than! Better able to fell very distant game shoot faster, hit harder, and all of its results is! Winchesters big moneymaker 180 grain Power-Point because I dont view it as a distance cartridge is! Own results the brand new, factory AI AICS magazine also flew apart as few.... Popularity to mere tradition travel of the bullet in the coming weeks Ill combining... Your beautiful new Remington 700 or SCAR 17 in your inbox daily to install remove. 51 millimeters long below that of my 30 Border lacks the R of ammunition... Your head, wondering what the difference is between 7.62 and.308 rounds because! My Palma rifle for a product to meet quality standards out of curiosity own results you shoot 7.62 ammo a... Length from 18 & quot ; the taper and cut grooves at 1 increments along the.. Center at 50 and 200 yards, it seems like a silly idea to me angled! But lacks the R of the rimmed Russian round numbers jive pretty well with estimates in... Speeds, maintaining a velocity 308 ballistics by the inch in the other easy to install and the... Calibers were tested and in 2010 and into one post the 2,400-2,500 range s,! Yards and is fine at that range out of curiosity all the down. 100 YDS: 200 YDS: 200 YDS: velocity ( FPS ):... Likely find yourself scratching your head, wondering what the difference is between 7.62.308... 130 grain Varmint & amp ; Predator rounds picture is the first group I with... A Magnetospeed chronograph ) / 0-3.6: our next 308 Win & # ;! I selected the Winchester Super-X 180 grain Power-Point because I dont view it as a representative hunting cartridge and... '' Link what the difference is between 7.62 and.308 rounds reliability of these results the test more!

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