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Started By
Message
re: Official AR-15 thread
Posted on 4/30/14 at 11:24 am to LSUmakemewanna
Posted on 4/30/14 at 11:24 am to LSUmakemewanna
quote:
Take a look. .308 is fine according to the manual.
And people who have have actually shot that gun with commercial .308 ammo have had problems.
You need more than just a little Google time to understand all the issues here. What you found leaves out some very important details.
quote:
Also be aware this is why mil NATO brass is thicker vice 308 commercial brass.
Do you even know where the brass is thicker? Do you know many commercial loadings are actually thicker in the case webbing and base?
quote:
That means any newer weapon will be able to fire 308 Commercial ammo as manfs would not let them out the door if they could not, due to liability.
They let them out the door all the time. Tolerance stacking is something no manufacturer can control 100%. There is a reason why people who actually know about these things recommend getting a set of gauges or taking to a gunsmith to get checked out. At the very least getting several brands of 7.62mm NATO and .308 Win commercial loadings and doing a soft hand load with the bolt to test headspacing.
1
Posted on 4/30/14 at 12:03 pm to Clames
quote:
And people who have have actually shot that gun with commercial .308 ammo have had problems.
Actually, people have had more problems with the NATO ammunition. Google.
quote:
They let them out the door all the time. Tolerance stacking is something no manufacturer can control 100%
I seriously doubt SIG is printing manuals that say 308 is fine to shoot while there being an issue with infact shooting 308 out of this rifle. C'mon man. This has little to do with tolerance stacking, and more to do with it being huge liability to tell the owner he can shoot something that is unsafe (i.e. the product manual). And it's been in print for a while now.
quote:
Do you even know where the brass is thicker? Do you know many commercial loadings are actually thicker in the case webbing and base?
The point that was trying to be made in that passage was more in recognizing the fact that there is not as much of a difference in the pressure between NATO 7.62 and commercial 308.
quote:
There is a reason why people who actually know about these things recommend getting a set of gauges or taking to a gunsmith to get checked out
Yeah, I get that. I have my builds (not factory) gauged. If it were me, since there seems to be controversy, I would not hesitate to get it checked. Then, go shoot it with 308.
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