Yeah, an M1 Garand chambered for .458 Winchester Magnum (Win-Mag) is a weapon you go to when it’s just time to say, “Fuck it! Fuck you! Fuck Everything!” and just cut loose, irrespective of the cost in pain. 😉
Or not …
OK, funny as the above is, an M1 Garand in .458 Win-Mag is going to weigh in at or near 10lbs, whereas the Weatherby Mark 5 (a much more normal/common weapon in this caliber) in the same chambering weighs in around 6.5lbs. That’s a significant increase in weight (35%) with a commensurate reduction of recoil passed through one’s shoulder.
But yeah, load this beautiful beast up with 400gr FN ammo and unleash the hell that comes with 5,411 foot-pounds (7,336 J) of muzzle energy.