A lot of folks new to the M1 Garand look for a way to source ammo a box or two of ammo at their local shop on the way to the range.
While I know not everyone can afford cases and cases of HXP, the M1 Garand is designed to shoot a very specific round. Exceeding the M2 ball pressure specification puts excessive stress on the op rod and can cause catastrophic failure.
Internet lore might tell you “just shoot anything 150 grain or less” or some nonsense about FPS, as opposed to powder burn rate, well…
The results of heavy hunting ammo shot through a reader’s garand.
Your call.