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Poopoo on cast bad for gas system, ideal no. Can you have problems getting gas system to function on typical cast load pressures, sure.
I have run cast in AR 450 rounds full function 3 moa accuracy. No leading except a riny bit in the throat.
M1, M1 carbine , sks and M1a
All had enough through them if there was going to be a gas system problem I would have had one. The M1 carbine really likes the cast loads and the bullet I use is plain base!

[QUOTE="mac1911, post: 7204882, member: 12137"] Poopoo on cast bad for gas system, ideal no. Can you have problems getting gas system to function on typical cast load pressures, sure. I have run cast in AR 450 rounds full function 3 moa accuracy. No leading except a riny bit in the throat. M1, M1 carbine , sks and M1a All had enough through them if there was going to be a gas system problem I would have had one. The M1 carbine really likes the cast loads and the bullet I use is plain base! [/QUOTE]

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