I am leed to believe the only issue with the M1 Garand and Modern loads is the excess force developed, can bend the Op rod as well as create cracks in the reciever heel.
A common option to make the M1 a litte more ammo friendly, is to use a Schuster adjustable gas nut. They are about $45 USD.
Even with the gas nut some very high pressure rounds should still be avoided.
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where buy Schuster adjustable gas nut. They are about $45 USD.
there are some on EE right now, not schuster but same idea.
Not picky, it will usually fire it all just fine. The 2 big issues are premature clip ejection from excessive bolt battering, and bending the oprod. The reason is the slower powders used in modern ammo to reduce chamber pressure and increase muzzle velocity. IMR 4895 is the powder originally developed for the .30-06 cartridge and it has the proper pressure curve that the M1 was designed to run at. Slower powders produce higher pressure at the gas port which leads to excessive drive pressure on the gas system. This causes the issues above. Both Shuster and Mccann gas plugs vent excessive pressure from the gas cylinder to allow modern ammunition to be used without being too hard on the rifle.
"So are we just gonna go in there and kill em?"
"No, I'm gonna ask them some questions... then we're gonna kill em"