.308 vs 30-06

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Sometimes I think I should’ve went .308 instead of buying into 30.06 years ago. But it’s ok, ultimately for my uses it doesn’t matter. Im a casual hand loader and I enjoy 30.06. Can do everything from 125gr plinkers, to 220gr hammers. Can use a wide range of different powders. Etc.

Granted I’m not shooting high volume rifle stuff or competing. I maybe put 200rnds a year through my 30.06s… if I was shooting high volume I’d probably go towards .308 or 6.5

My dad bought a 6.5 a few years ago so I went ahead and got dies for it. It shares many powders with 30.06. I must say 6.5 is a pleasure to shoot and it is indeed accurate. 400yds is the farthest we’ve taken it so far, it did very well (just a ruger American predator)
 
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I found this article and it is interesting to read.


Accuracy Facts

.308 Winchester versus .30-06 Springfield

By Bart Bobbitt


Seems to me that any time there's more metal contacting the bullet, the greater [the] chance that more variables come into play. Besides, folks who shoot highpower rifles the most accurate[ly] have very little case neck tension on the bullet anyway.

It's really easier to have uniform case neck tension by having it light in the first place; neck length doesn't come into play when this is how it's done. And ammo that's been handloaded [which is] then let set for several weeks or months will have a greater release force needed with long necks because of dissimilar materials bonding between bullet jacket and case neck/fouling. There's more area to bond when longer necks are used.

All that aside, lets go back to when the .30-06 and .308 were the only cartridges allowed in NRA match rifle matches. Both cartridges were used in barrels of equal quality as well as the same action and stocks by several top shooters in the USA. Both cartridges were used in matches at ranges from 100 through 1000 yards. Many thousands of rounds were fired in both types. Bullets from 168 through 200 grains were used with several powder, case and primer combinations.

In comparing accuracy between the .308 and .30-06, folks who used each quickly agreed on one thing: .308s were two to three times more accurate than the .30-06. In the early 1960s, it was also observed that competitors with lower classifications using .308s were getting higher scores than higher classified folks using .30-06s; at all ranges. By the middle to late 1960s, all the top highpower shooters and virtually all the rest had switched to the .308. The Highpower Committee had received so many complaints of ties not being able to be broke between shooters using the .308 and shooting all their shots in the tie-breaking V-ring, something had to be done to resolve this issue. In 1966, the NRA cut in half the target scoring ring dimensions.

At the peak of the .30-06's use as a competition cartridge, the most accurate rifles using it would shoot groups at 200 yards of about 2 inches, at 300 of about 3 inches. The 600-yard groups were 6 to 7 inches and at 1000 yards about 16 inches. As the high-scoring ring in targets was 3 inches at 200 and 300 yards, 12 inches at 600 and 20 inches at 1000, the top scores fired would have 90+ percent of the shots inside this V-ring.

Along came the 7.62mm NATO and its commercial version; the .308 Winchester. In the best rifles, 200 yard groups were about 3/4ths inch, at 300 about 1-1/2 inch. At 600 yards, groups were about 2-1/2 inch and at 1000 about 7 to 8 inches. It was not very long before the .30-06 round no longer won matches nor set any records; all it's records were broken by the .308 by a considerable margin. Some accuracy tests at 600 yards with the .308 produced test groups in the 1 to 2 inch range. These were 20 to 40 shot groups. No .30-06 has ever come close to shooting that well.

At 1000 yards, where both the .30-06 and .308 were allowed in Palma matches, the .308 was the clear-cut most accurate of the two. If top shooters felt the .30-06 was a more accurate round, they would have used it - they didn't. In fact by the early 1970s, the scoring ring dimensions on the 800 - 1000 yard target were also cut in about half due to the accuracy of both the .308 Win. over the .30-06 and the .30-.338 over the .300 H&H when used in long range matches.

Most top highpower shooters feel the main reason the .308 is much more accurate than the .30-06 is its shorter, fatter case promotes more uniform and gentle push on the bullet due to a higher loading density (less air space) and a more easily uniformly ignitable powder charge.

Military arsenals who produced match and service ammo in both 7.62mm and 30 caliber have fired thousands of test rounds/groups with both. They also found out that with both ammo types, the smallest groups were with the 7.62 by about 50 to 60 percent. M1 rifles in 7.62 shot about twice as small of groups as .30 M1s at all ranges. When the M14 was first used, there were some .30-06 M1 rifles that would shoot more accurately. It took the service teams several years to perfect the methods of making M14s shoot well, but when they did, they shot as good as M1s in 7.62.

There will always be folks who claim the .30-06 is a more accurate cartridge. All I have to say to them is to properly test .308 vs. .30-06 and find out. Theory is nice to think about; facts determine the truth.

* Note - Mr. Bobbitt did not submit this article to Sniper Country, but rather to the rec.guns newsgroup on February 7, 1997. He has authored many postings to rec.guns, and is highly qualified to comment on a variety of shooting-related topics. Among his many distinctions within the shooting community, he once fired a 20-shot, 3.325" group at 800 yards! (Refer to the advertisement for Krieger Barrels in the May, 1997, issue of Precision Shooting magazine.) Mr. Bobbitt's other postings to rec.guns can be found by doing an author's profile on his name via the Deja News service. This rec.guns posting was acquired via Deja News (see the Deja News policy on materials posted to newsgroups).
Build me a 15-20lb rifle in a Mcmillan A5 in 308 or 30-06 and load them with 175s or 190 grainer match bullets and we will be slapping anything we want to out to 1000-1200 pretty predictably. I always wanted a precision 30-06 but I dont handload
 
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Build me a 15-20lb rifle in a Mcmillan A5 in 308 or 30-06 and load them with 175s or 190 grainer match bullets and we will be slapping anything we want to out to 1000-1200 pretty predictably. I always wanted a precision 30-06 but I dont handload

Yea those heavy rifles are not even the same realm as an off the shelf rifle from the local sporting goods stores.

I weighed rifles today.
Heavy barrel savage axis in .243 with a wood laminated Boyd thumb hole stock and Redfield 6-24x50 30mm tube scope and a Harris light weight 25" bipod weighs in at 12 lbs.

My next heaviest is a 6.5x55 Swedish Mauser with a scope on it 10.75 lb.
The 30-06 I just cut the barrel on is 8.75 lb with scope and short bipod.
Bipod is .66 lb.

The 4" of barrel I cut off the 100ATR 30-06 weighs .26 lb.
 

dlbleak

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Yea those heavy rifles are not even the same realm as an off the shelf rifle from the local sporting goods stores.

I weighed rifles today.
Heavy barrel savage axis in .243 with a wood laminated Boyd thumb hole stock and Redfield 6-24x50 30mm tube scope and a Harris light weight 25" bipod weighs in at 12 lbs.

My next heaviest is a 6.5x55 Swedish Mauser with a scope on it 10.75 lb.
The 30-06 I just cut the barrel on is 8.75 lb with scope and short bipod.
Bipod is .66 lb.

The 4" of barrel I cut off the 100ATR 30-06 weighs .26 lb.
I’m not so good at math but 4 inches . 26, a bit over 4 ounces? Seems like it would be more.
 


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