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Old April 3, 2012, 08:13 AM   #7
kraigwy
Senior Member
 
Join Date: June 16, 2008
Location: Wyoming
Posts: 11,061
Quote:
is it kosher to use 308 brass for 7.62x51
Yes its safe to use 308 brass in a M1A.

Hornady and others show different loads for gas vs bolt guns, in 223, 308, and '06.

Reason being these guns (for a lesser entent the 223) are desighted for 149-175 grn bullets and mideum buring powder 4895/4064, etc.

Its not because of the pressure per se, but when the pressure is where, its hard on the gas system, not the action. The actions of the M1A/M1s will take it.

When reloading forget the 7.62 NATO vs 308 Winchester crap. I've been shooting both in my M1A since I got it in 1977 and I don't mean I've shoot it a little bit, I've shot the crap out of it while shooting for the Guard, Went through several barrels but the gun itself is still sound and still shoots.

If you walk up and down the line at a high power match where people are shoooting service rifles you'll find Winchester Brass is the most popular.
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