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Never heard such nonsenseGenerally accepted that you should not shoot .308 from a 7.62 chamber. You can shoot both .308, and 7.62 in a .308 chamber. If you want to shoot both, get the .308 chamber.
Im building an AR10 from Palmetto State Parts. The lower is complete and I am ready to purchase my upper. I want to be able to fire both .308 and 7.62x51 caliber rounds from the rifle. Which of these calibers should the rifle be chambered in for me to be able to do that?
Twist rate is up to you. If you only intend to shoot between 147 and 168 (175 may or may not be good depending on ammo) then 1:12 is fine. Any heavier and you'll want to look for a 1:10.
If you don't mind me asking for sake of clarification, were these failures from both the FR7 and the FR8, or just one of the two?However I have an old FR8 Cetme chambered in 7.62X51 that I wont shoot .308 out of. Its one of those things that is marginal to begin with and there are a few reported failures using .308 ammo so better safe than sorry.
If you don't mind me asking for sake of clarification, were these failures from both the FR7 and the FR8, or just one of the two?
Boy the only problem I have ever had from my CETME was trying some soft point hunting rounds I got cheap.I honestly dont know. If I recall the issue with these was that some early ones where chambered in what they called 7.62 x 51 Cetme which was the same cartridge specs but loaded wimpy (light even for a 7.62 x 51) and that the stretch from that to a hot .308 round is just too much in some cases.
I am not an expert in them by any stretch.
Boy the only problem I have ever had from my CETME was trying some soft point hunting rounds I got cheap.
Those just wouldn't feed.
Spit everything else right where I pointed the gun and threw the cases into the next county
Its the FR7 then. The FR7 is a small ring mauser while the FR8 is the large ring. The FR7 was chambered for their weak 7.62x51 CETME, the FR8 was chambered for 7.62 NATO. Never heard of issues with the FR8, but I have with the FR7 and commercial .308.I honestly dont know. If I recall the issue with these was that some early ones where chambered in what they called 7.62 x 51 Cetme which was the same cartridge specs but loaded wimpy (light even for a 7.62 x 51) and that the stretch from that to a hot .308 round is just too much in some cases.
I am not an expert in them by any stretch.