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Review: 6.5 Creedmoor versus .308 Winchester

Recently, Springfield introduced the iconic M1A rifle in 6.5 Creedmoor. This got my attention. The AR rifle has sucked the life from most other self-loading rifles but not the M1A. This is a big step. Perhaps, I should look harder at the two cartridges—6.5 and .308 for brevity.

Federal 6.5 Creedmoor ammunition box

Federal’s new hunting loads makes the 6.5 Creedmoor even more attractive.

The 6.5 Creedmoor is similar enough to the .308 that re-chambering a popular rifle isn’t a problem for the major makers. The Creedmoor uses a skinny light bullet to achieve good ballistics. This isn’t necessarily a higher velocity loading, but instead, it is a very efficient loading. The 6.5 is a popular long-range number that has seen much use the past decade or so for firing beyond 500 yards. And that’s the deal right there—long range.

The .308 is a great go-anywhere do-anything cartridge but it isn’t the finest long-range cartridge. Long range results with the .308 hinge on a great rifle and optics, and also a great shooter. At ranges up to 500 yards—with proper load selection—I don’t see that much difference, except perhaps in wind resistance. At 1,000 yards you see the 6.5 has a big advantage in hitting the target easily with less calculations.

I hesitate to discuss feed reliability as my two current M1A rifles are well used and have never stuttered. However, the 6.5 has a 30 degree shoulder, the .308 a 20 degree shoulder. The 6.5 should feed better.

Federal Juggernaut .308 ammunition box

The .308 offers real versatility. This is the Federal Juggernaut using the 185 grain Berger.

While 6.5 brass is being produced in great quantity by Hornady, .308 brass is certainly plentiful. A few years ago, during the great ammunition shortage, some of us were rocked by the fact that .308 brass was difficult to find. I never forget such things. If you stock up on new brass, there isn’t a difference in price—perhaps when total cost is applied, the 6.5 may be less expensive. However, used brass strongly favors the .308.

As for bullets, there are plenty of 6.5 bullets available for hunting, target shooting, or varmints. I use the Hornady SST for .30 hunting. But for long range and pure accuracy, the Sierra Matchking is, well, king. The Ballistic coefficient of this bullet is .496. At about 2,600 fps, or a bit more from my Savage Model 12, this is a superbly-accurate cartridge.

The Creedmoor’s 140-grain bullet has a ballistic coefficient of .626 at 2,700 fps. Bullets for the 6.5 actually cost three to five percent less overall. So, the 6.5 has an equal footing with bullet selection, if not as broad a selection. If you are going for moose or long range on ram, you are going to have to buck up to the 7mm Magnum in any case, so the 6.5 and .308 are each pretty close. At present, the 6.5 isn’t available in any of the less expensive ‘combination guns’ such as the Savage Axis. I suppose it will be eventually.

Springfield Armory M1A chambered for 5.6 Creedmoor right profile

Springfield Armory is now offering a 6.5 Creedmoor chambering in the M1A.

A big plus for the 6.5 that cannot be debated is recoil. The 6.5 Creedmoor produces less recoil energy than the .308 Winchester. I do not find the .308 offensive, but some complain of the effect after a day’s shooting. So, there is a definite plus if you are shooting a lot at targets over a long distance and like to lower the shock to the shoulder after firing a few hundred cartridges on a good day. After all the .308 was designed to replace the .30-06, which it did, and the 6.5 was designed as a long range, easy to shoot, target cartridge.

Personally, I find nothing wrong with the .300 Savage, but that’s another story. I think, in many ways, we should own both rifles and both cartridges. We are not concerned with a NATO supply line and fun is the name of the game, given an effective caliber choice.

.308 Win. or 6.5 Creedmoor, which caliber do you prefer for hunting or long-range target shooting? If you have both, which rifle shoots the best groups? How does the recoil compare in your book? Share your answers in the comment section.

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The mission of Cheaper Than Dirt!’s blog, “The Shooter’s Log,” is to provide information-not opinions-to our customers and the shooting community. We want you, our readers, to be able to make informed decisions. The information provided here does not represent the views of Cheaper Than Dirt!

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