Quote History Quoted:
because CMP says so... Jim Thompson says so and he even confirmed this while shooting heavy 220grn loads.
M1 garands can use almost any commercial ammo out there. Keep it well greased..
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You can also fire the G43/K43 with standard 8mm ammo...it will just batter the rifle and components until something gives. That's why they make an adjustable gas system for it now.
My point is just because the rifle CAN take the abuse, it doesn't make it good in the long run for service life.
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I also read about that test Jim Thompson performed. I don't see any real data about op rod speed or anything besides he decided to load up some high power ammo and shoot it.
Then he stripped the rifle of all lubricants and fired it, then was surprised when it malfunctioned.
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How about this...
Take your car to the race track and do multiple redline speed runs, then drain all the oil and try again.
Let me know how that goes because it's the same concept.