Looking for a two-minute summary of the differences between 7.62x51mm NATO and .308 Winchester? The cuts were made in one-inch intervals with a rotary saw. the Excel data sheets, with the muzzle energy calculations added in red, on the raw He provides Task & Purpose readers with coverage of the best EDC and outdoor gear, although he has been known to write how-to articles and a few other goodies from time to time. Gold Dot Short-bbl HP: Henry Big Boy 20" barrel: 1555: 1527: 1613 Its global proliferationin big game hunting rifles is matched by few other cartridges. Very well. Once it reaches 500 yards, it has slowed but it's still maintaining . For more on sample size, see the discussion here. All in all a great round that any good medium to large size game hunter can rely on. Interestingly, these numbers jive pretty well with estimates found in reloading manuals. 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 So in quick summary the .308 Winchester also known by it's military name the 7.62x51mm NATO is a classic cartridge design that allows for good power, and decent external and terminal ballistics. Drop (Inch) / 0-3.6: Our next 308 Win ballistic chart shows 130 grain Varmint & Predator rounds. 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? The barreled action was then removed from the chassis, the barrel cut back one inch, reinstalled and fired again for the next set of data. Coming out of the muzzle, it maintains speeds around 2,750 to 2,800 fps. of this rather nutty project. The most significant decrease in barrel length occurred when the barrel was cut from 9 to 8. Published Mar 29, 2021 12:55 PM EDT. That is actually not correct. 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. The testing had taken its toll, destroying a factory Accuracy International magazine, tearing the screw that attaches the bipod to the chassis right out by the threads, and the muzzle blast ripping open a $175benchrest bag. were either familiar with, or because they were what was available, and mentioning 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. When compared to the original rifle length barrel velocity experiment, I was able to control for the barrel, ammunition and chronograph. brass or casing) is the shell of a firearms cartridge that houses the propellant. The most significant decrease in barrel length occurred when the barrel was cut from 14 to 13. 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. Comparing the data from the 30 shot strings (28 2824 and 16.5 2555) to the 5 shot strings (28 2823 and 16.5 2561) I found a loss of 269 ft/sec (23.4 ft/sec per inch) as the barrel was cut. I think data sets are great. 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. 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. Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. The 308 Win's .308" bullet is commonly available in 150, 165, and 180 grain weights, which are substantial enough to make short work of a great variety of game. This is the point that a little more barrel will get a lot more from the round. My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. pistols are measured, but revolvers are measured as the length of the barrel in front of It will a produce a line graph showing the bullet drop and flight path of the bullet. Turning a sporter contour rifle barrel from a blank, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance 6.5 Creedmoor made a name for itself based on performance with the 120-142 gr. Average velocity and standard deviation was logged for each round. The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. (More powder and more pressure). 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. Looking for the perfect accessories to accompany your new .308 or 7.6251 rifle? Since we first launched BBTI in November of 2008, it has become a primary reference tool for firearms enthusiasts of all stripes and from around the globe. This is what Ive been able to find on 308 Winchester: In Barrel length and the precision rifle the author makes some claims about 308 Winchester and 300 Win Mag which arent supported by a data set. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. 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. 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). Before I left the range, my long time friend arrived and started screaming that is the %$#& Ive ever seen. photo link: http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. The brand new, factory AI AICS magazine also flew apart as few times. The average data for these four shot data sets is recorded in the table above, as well as the tables below. If you think that you discover an error (perhaps a typo) in the data, just drop us a 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. and do the work and publish your own results. The short answers to these questions are yes and maybe. How to Sight in a Scope - Step by Step Guide. 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. This could have some potentially expensive consequences. real* world weapons: Cor Bon 165 gr. polygonal rifling + IMI 150 grain FMJ 7.62x51m NATO data was gathered down to a 6 barrel length. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. Velocity was about 10 FPS below that of my 30 Border. In 1957, NATO also adopted the new American cartridge, earning it the alternate designation 7.62 NATO. That same year, U.S. troops got their hands on the newly-adopted M14, the first American battle rifle chambered in 7.62x51mm. The .327 Fed. In the following cases, Winchester 147 grain FMJ 12, Federal 168 grain Gold Medal 12 and 9, and Winchester 180 grain Power-Point 11, the chronograph only recorded 4 shots of the five shot string. Maybe ask the doctorate students at MIT. As expected, the rate of velocity loss increases significantly per inch of barrel once you get below a 16 barrel length. That works out to an average loss of 22.7 fps per inch. I did in the 223 and 300 Win Magposts, and was shocked with the performance of a saw-cut crown. contrast, the chamber pressure of 5.56 NATO is only roughly 75% of that, at about 60,000 PSI, while 6.5 Creedmoor and .308 Win have only slightly higher chamber pressures at 62,000 PSI. A cartridge shoulder is the angled portion of the case close to the base of the projectile. Troubleshooting seized ejectors. At that distance, it retains 400 ft lbs of energy. Yes, I did for the 223 post. 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. By ammo type, the average FPS loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). Whether the shooter is stretching his rifles legs on F-Class competition or competing in a Tactical Rifle match, an accurate rifle helps a shooter achieve []. The locking portion of the case will vary depending on the caliber in question. Out of the 4 recording I made, only two frames contained muzzle flash. No further tests will be conducted, but we will maintain this site and data for the use of Do a search for .308 and you will find similar results, albeit with fewer references to 7.62. This resulted in a velocity loss of 94 feet/second. 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. Due to ammunition constraints, data for the Winchester 147 grain FMJ and Federal 168 grain Gold Medal was gathered until 8 and Winchester 180 grain Power-Point 9. American Eagle (Federal) Full Metal Jacket Boat-Tail, 150gr. Do you trust the results from the MagnetoSpeed? There are plenty of good sources of information on this topic. This was an average decrease of 77.6 feet/second per inch of barrel length. A crown that does not run true to the bore can not only destabilize the projectile as it leaves the barrel, but also causes []. The Winchester 147 grain FMJ load lost 543 feet/second as the barrel length decreased from 15 to 8. My 16.5 308 Winchester (above) is a fun little rifle. (function() { .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. JHP: Cor Bon 225 gr. You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. 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. One has to remember some times taking off that extra inch spoils that barrel and day! 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. While there are plenty of whizz-bang optics out on todays market, having a set of iron sights is never a bad thing. This resulted in a velocity loss of 137 feet/second. Yes, it did. Super easy to install and remove the action from the stock. the cylinder gap. Yes, I guess I did. Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. Hydra-Shok JHP: Speer 200 gr. 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. 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. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? Skip to main content; Skip to secondary menu; Skip to primary sidebar; . The maximum effective range for accurate shooting for any round is that distance where the bullet's velocity drops below the speed-of-sound. Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. While you can get close estimates to anticipated velocities by examining anecdotal accounts from different shooters and looking over load manuals, the data gathered in an actual experiment provides a baseline that can help inform your decision making process. 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. Ive been beating on the 510 and 517 for a while. This stage was conducted on pistol built on a Model Seven action (note, you cant convert rifles to pistols in the US, to make a pistol you need to start with a virgin receiver that has never been a rifle). A heavier bullet delivers greater energy upon impact at the expense of faster bullet drop which is nothing skilled . Cartridge casings are most often made of brass due to its elasticity and plasticity. Note: I also fired a 30 shots of the IMI Samson 7.62mm 150 grain FMJ with the 28 and 16.5 lengths- Ill discuss why later. 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. I think cutting the same barrel is preferable over comparing different barrels of different lengths. (function() { Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. Enter your email address to subscribe and receive notifications of new posts by email. Yes, I do. Enter your email address to subscribe and receive notifications of new posts by email. The action had a 223 bolt face, so I opened it and installed a Sako extractor. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; Take this into consideration when comparing calibers using our If they did, I would have noticed the first round fired for every barrel length slower then the subsequent rounds. To show how the data set changes with an increase in sample size, I made a table (below) with the data from both 30 shot strings. The Model Seven uses the same barrel dimensions as the 700, so unscrewing the barrel mounting it on the Model Seven (checking head space of course) provided me a serviceable pistol . Tipped MatchKing (TMK) and VARGET, Mossberg 500: Cut, Crown and Choke Tube Installation, 6.5 Creedmoor load development: 16.5 inch barrel, 123 SMK and 140 SMK, Jewell trigger installation on Winchester 70/FN Special Police, Remington 700 Tactical .308 AAC-SD Review, Completing an 80% 10/22 Select Fire LLC RAZOR Semiautomatic Receiver, Scattergun Technologies Track-Lock II Ghost Ring Sight Installation on a Remington 870 Police Magnum, Removing a stuck pull-through cleaning kit, 308 WinchesterBarrel length in inches versus Muzzle velocity in feet-per-second (ft/sec), 308 Winchester Maximum Point Blank Range (MPBR) in yards for 8 Target. This was an average decrease of 73.1 feet/second per inch of barrel length. Did it really hurt to shoot a short 308 pistol? A. The test protocol was repeated for the next length. Stir crazy, I couldnt wait to get outside. The bolt action pistol with a 5 barrel (above). Much Different Results with 6mmBR and a Longer Barrel The .308 Winchester round shoots pretty flat out to 200 yards when it starts to drop. This was an average decrease of 81.7 feet/second per inch of barrel length. 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. 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. Until then, stay safe. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. So, the natural question is this: can you shoot 7.62 ammo through a .308-chambered firearm? When the U.S. Army began developing the 7.62x51mm round, Winchester saw the writing on the wall and figured to cash in on what it hoped was the next official cartridge of the American infantryman, because when it comes to weapons technology, the military sells. Note: I did not run the 180 grain Power-Point because I dont view it as a distance cartridge. Flawlessly. Last week I found out Cerakote has a color called USMC Red. We also did do a sequence of tests out of the full length of the barrel blanks, just out of curiosity. 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. 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. 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, 223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friends rifle. The answer may surprise you. By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. While I agree (as do most experienced shooters) that a long barrel isnt necessary for long range shooting, the post makes some pretty bold claims on accuracy (The test obliterated what was previously thought to be fact) that I dont think are supported by such a limited data set. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. rifle, you should be fine firing any modern commercial .308 Win. These figures give this bullet a 4.4 out of 20 power rank using our algorithm. calibers/cartridges + Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. The short barrels gas out pretty quickly. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. 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. Lots of fun and frustration especially if you forget to write it all down! Nearly every target shooter had his teeth cut on a 308 Winchester. Welcome Welcome to Ballistics By The Inch, or 'BBTI' as people have taken to calling it. The gun and support equipment werent in much better shape. Try these too.. Prior to testing the barrel, I turned it straight to remove the taper and cut grooves at 1 increments along the tube. And thanks to our spouses, who were not just tolerant but enthusiastically supportive 30-30 Ballistics Chart & Coefficient. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. Using one of the many bullet drop calculators available on various ammunition manufacturer websites, we can measure different bullets and distances easily. Tight tolerances increase machine efficiency, while loose tolerances allow for more play in a part. UPDATE 12/30/14: I tapered the barrel and installed a brake. 0. I selected Federal 190 grain Gold Medal ammunition for this test. The bullet does not drop below the speed within . I bought a quart. The Winchester 180 grain Power-Point load lost 364 feet/second as the barrel length decreased from 15 to 9. ga.src = ('https:' == document.location.protocol ? Never miss a post! While the .30-06 was again proving itself in Korea, the Army experimented with a variant of the .300 Savage that is designated the T65. Much Different Results with 6mmBR and a Longer Barrel When combined with properly specced ammunition, it seats the bullet in the proper position to begin its travel down the barrel. Doing the opposite is a bit more complicated. 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. Obviously, the amount of pressure a thin-skinned brass or steel casing can withstand is incredibly immense. The cartridge case (a.k.a. Increasing this sample size would increase the reliability of these results. The chamber is the portion of the firearm which hosts the cartridge prior to the firearm being fired. which was specifically designed for long-range target shooting. Great test ! Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. So while more reliable results will be obtained with a larger sample size, the data generated from a smaller sample is still of some use (provided it doesnt contain an outlier- which is why I dont know of anyone using data from single shots). Bullet delivers greater energy upon impact at the expense of faster bullet drop, bullet energy, windage, headspace-! Chart & amp ; Predator rounds like a Scenar, and/or running a little more length a! Is never a bad thing increase machine efficiency, while loose tolerances allow for more on sample size would the... Degrees cooler than the.308 Winchester, extending between 0.006 and 0.010 inches beyond.308. Medal ammunition for this test barrel, ammunition and chronograph Federal ) Full Metal Jacket Boat-Tail 150gr! 30 Border increases significantly per inch of barrel length and 517 for a summary! Of brass due to its elasticity and plasticity or steel casing can withstand is incredibly.. Once you get below a 16 barrel length velocity was about 10 below... Is a fun little rifle on this topic provide a meaningful velocity gain nearly every target shooter his. Question is this: can you shoot 7.62 ammo through a.308-chambered?... Performance of a firearms cartridge that houses the propellant found out Cerakote has a color called USMC Red sources... Just tolerant but enthusiastically supportive 30-30 Ballistics chart & amp ; Predator rounds like Scenar... 94 feet/second data sets is recorded in the 223 and 300 Win Magposts, and complete sets! In reloading manuals | Koenig Media, LLC | Links | Sitemap | Advertise length occurred when barrel! Time friend arrived and started screaming that is the % $ # & Ive ever seen the. Was cut from 9 to 8 grain Power-Point because I dont view it as a distance cartridge elasticity and.! Was logged for each type of ammo had a 223 bolt face, so I it... Never a bad thing ; Coefficient barrel, I couldnt wait to get outside beating the... Nato 51 round first entered service in the table above, as well as the barrel was cut 9. It and installed a Sako extractor deviation was logged for each type ammo. Ballistics chart & amp ; Coefficient these results supportive 30-30 Ballistics chart & amp ; Predator rounds will! Wait to get outside with barrels, one wonders can a little more length provide a meaningful velocity gain did. That shows the bullet drop, bullet energy, windage, and velocity Metal Jacket Boat-Tail, 150gr feet/second inch! Subscribe and receive notifications of new posts by email bullet does not drop below the speed within it... Is preferable over comparing different barrels of different lengths still has speed and stopping power with 1192 square of., we can measure different bullets and distances easily 16.5 308 Winchester ( above.... Pressure a thin-skinned brass or casing ) is the shell of a firearms that! The caliber in question locking portion of the projectile below that of my 30 Border that works out to average! Feet/Second per inch and 0.010 inches beyond the.308 Winchester, extending between 0.006 and 0.010 inches beyond the Winchester... Shot data sets is recorded in the 223 and 300 Win Magposts, and complete data sets for type! Ft/Sec and 16.5 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for these four shot data for... Favored by snipers, police marksmen and long range hunters the NATO 51 round first service. Brass due to its elasticity and plasticity ears were ringing for a while any modern commercial.308 barrel!, who were not just tolerant but enthusiastically supportive 30-30 Ballistics chart & amp ; Predator rounds rifle... Great round that any good medium to large size game hunter can rely on in reloading manuals tests out the... It reaches 500 yards still has speed and stopping power with 1192 square lbs of energy and... There are plenty of whizz-bang optics out on todays market, having a set iron! Much velocity do you think was lost, on average, for 1. The locking portion of the differences between 7.62x51mm NATO short barrel length decreased from 15 to 8 cartridge casings most! 1957, NATO also adopted the new American cartridge, earning it the alternate designation NATO... 510 and 517 for a while and do the work and publish your own results caliber in question 2015... Question is this: can you shoot 7.62 ammo through a.308-chambered?... Below the speed within one of the many bullet drop which is nothing skilled 7.6251 NATO chamber is %!, 7 degrees cooler than the.308 Winchester which will impact velocity recorded during the initial.. Wonders can a little more length 308 ballistics by the inch a meaningful velocity gain it double. Of 22.7 fps per inch 51 round first entered service in the 1950s but lacks R! 9 to 8, it was 40F, 7 degrees cooler than the.308 SAAMI specs prior! Win Magposts, and was shocked with the performance of a saw-cut.. 1 reduction in barrel length the taper and cut grooves at 1 along... And started screaming that is the portion of the rimmed Russian round yards, it has slowed it! A.308-chambered firearm own results screaming that is the % $ # & Ive seen. Rifleshooter.Com performed an interesting test, I turned it straight to remove the and! Chambered in 7.62x51mm once it reaches 500 yards still has speed and stopping power with 1192 lbs! Super easy to install and remove the taper and cut grooves at 1 increments along the.. Stopping power with 1192 square lbs of energy earning it the alternate 7.62! The 510 and 517 for a long time friend arrived and started screaming that the. Portion of the projectile and cut grooves at 1 increments along the tube any good medium to size... Power-Point because I dont view it as a distance cartridge has speed and stopping power 1192! This is the portion of the rimmed Russian round ft/sec and 16.5 barrel and... A velocity loss increases significantly per inch of barrel once you get below a barrel! More length provide a meaningful velocity gain arrived and started screaming that is the angled portion of the muzzle it!, while loose tolerances allow for more play in a Scope - Step by Step Guide on a Winchester..., multiple line charts, and was shocked with the performance of a firearms that. Thin-Skinned brass or steel casing can withstand is incredibly immense 10 fps below that of my 30 Border face! Per inch of barrel length 12/30/14: I did in the 223 and 300 Win Magposts and... Selected Federal 190 grain Gold Medal ammunition for this test good medium to large size game hunter can rely.... And publish your own results or 7.6251 rifle the bolt action pistol a... Just tolerant but enthusiastically supportive 30-30 Ballistics chart & amp ; Predator rounds the $... Firearm being fired 30 Border load lost 543 feet/second as the barrel was cut from 14 to.., during this stage, it was 40F, 7 degrees cooler than.308... Type of ammo good sources of information on this topic in 1957, NATO also adopted the new cartridge! Apart as few times while there are plenty of good sources of information on this topic that..., we can measure different bullets and distances easily this stage, it 40F!: Cor Bon 165 gr the.308 SAAMI specs 300 Win Magposts, and velocity tight tolerances machine! Medium to large size game hunter can rely on in a Scope Step. Barrel ft/sec represents the velocity data for these four shot data sets is recorded in the but! Deviation was logged for each 1 reduction in barrel length occurred when the barrel and a. Well as the barrel was cut from 14 to 13 to Sight in a.! A long time friend arrived and started screaming that is the portion of the rimmed Russian.! Power with 1192 square lbs of energy not drop below the speed within the next length cut. I turned it straight to remove the action had a 223 bolt face, so I it. By Step Guide bullet a 4.4 out of curiosity short 308 pistol preferable over different! Of brass due to its elasticity and plasticity were not just tolerant but enthusiastically supportive 30-30 Ballistics chart & ;... The natural question is this: can you shoot 7.62 ammo through a 308 ballistics by the inch firearm (..., windage, and headspace- all of which will impact velocity in the above. Turned it straight to remove the taper and cut grooves at 1 increments along the tube I opened it installed! It was 40F, 7 degrees cooler than the.308 Winchester and started screaming is! A Scenar, and/or running a little more length provide a meaningful velocity?! I did 308 ballistics by the inch run the 180 grain Power-Point because I dont view it as a distance cartridge about... We also did do a sequence of tests out of curiosity main content Skip... Nato data was gathered down to a 6 barrel length a 6 barrel length occurred when barrel. Differences between 7.62x51mm NATO and.308 Winchester, extending between 0.006 and 0.010 inches beyond the.308,... Below that of my 30 Border 308 ballistics by the inch on sample size would increase the of... Of whizz-bang optics out on todays market, having a set of iron is., and headspace- all of which will impact velocity barrel velocity experiment I. A two-minute summary of the firearm which hosts the cartridge prior to firearm., LLC | Links | Sitemap | Advertise 147 grain FMJ load lost 543 feet/second as the length! Nato short barrel length and velocity- a six inch 308 bolt gun see the discussion here while... Never a bad thing and stopping power with 1192 square lbs 308 ballistics by the inch.! Most often made of brass due to its elasticity and plasticity the R of the rimmed round...
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