New Ruger precision rifle.

6.5mm projectiles have superior ballistic coefficients to .308 projectiles making the 6.5 particularly well suited for longer range shooting. The common wisdom is that, as far as long range precision shooting goes, you get ballistic performance similar to a .300 Win Mag but with far less recoil and longer barrel life.

That is the first that I have heard that 6.5 CM has worse barrel life than .308. I had always heard that they were similar, but both way better than higher pressure cartridges and magnums. But I'm still learning so I may have misunderstood...

similar powder capacity, similar pressure, smaller projectile... its going to wear faster than a .308
but its not going to be a 2000 round burnout like some of the magnums
 
similar powder capacity, similar pressure, smaller projectile... its going to wear faster than a .308
but its not going to be a 2000 round burnout like some of the magnums

Which ones which?

Gta6ax7.jpg



Similar features..... Longer hair.

The 6.5 Creedmore needs a 4" longer barrel and a higher twist rate to achieve moderately better ballistics.



Just Sayin'................
 
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The 6.5 Creedmore needs a 4" longer barrel and a higher twist rate to achieve moderately better ballistics.



Just Sayin'................

Moderately ?
You've clearly never had both side by side at 1000 yards in a gusty wind.
I love my .308's, but they are certainly outmatched by even a mildly loaded 6.5mm.
 
similar powder capacity, similar pressure, smaller projectile... its going to wear faster than a .308
but its not going to be a 2000 round burnout like some of the magnums

Ah, interesting. Thanks Fenix.NZ. I had thought the whole deal with barrel life was almost entirely related to throat erosion which was a factor of pressure.
 
Ah, interesting. Thanks Fenix.NZ. I had thought the whole deal with barrel life was almost entirely related to throat erosion which was a factor of pressure.

its nothing to stress over.. it'll wear faster but, faster could be 9800 rounds vs 10000 rounds..
Im basing this on no scientific testing, just conjecture. If someone has actual data on the wear rates then feel free to chime in.
 
its nothing to stress over.. it'll wear faster but, faster could be 9800 rounds vs 10000 rounds..
Im basing this on no scientific testing, just conjecture. If someone has actual data on the wear rates then feel free to chime in.

AH, okay. that makes sense. so a small enough difference that it really doesn't matter for all practical purposes. Works for me! Thanks!
 
Moderately ?
You've clearly never had both side by side at 1000 yards in a gusty wind.
I love my .308's, but they are certainly outmatched by even a mildly loaded 6.5mm.

You're right, I haven't.

Convince me.

Fenix.NZ, Twist rate = Spin rate, also may have to do with barrel longevity.

"this thread is no good without pics"


Just Sayin'.................
 
An article on the 260 (6.5mm and ballistically identical to the 6.5 Creedmoor) that pre-dates the 6.5 Creedmore:
http://demigodllc.com/articles/the-case-for-260-remington/

A more recent article comparing the 6.5 Creedmoor to 308:
http://www.scout.com/military/snipers-hide/story/1496625-hello-2015-now-replace-your-308

No one who understands basic ballistics should need to be convinced in 2015. This argument was settled a decade ago. 2 minutes comparing a company's equivalent bullet offerings in both calibers with speeds listed in loading manuals tells it all.
 
You're right, I haven't.

Convince me.

...

No need. I wasn't being condescending, it's just slap you in the face obvious when you run the two side by side at long range in the wind. A less accurate 6.5 will have a higher hit percentage than an extremely accurate 308. True story.
 
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