Just damn! I shot a 458 Win Mag - ONCE! Converted 8MM Mauser. Very light for caliber rifle. And I have nice pocket under a high cheek bone. AND shot it from the bench! Hardest I have ever been hit in my life! Actually reached in to see if my teeth came loose! 375 H&H was a cream puff comparatively! Not sure I could imagine, or WANT, to shoot a 458 Win in a Garand. Heck, full bore 45-70 rounds in the Marlin 1895 are no fun...