Originally Posted by ruggyh

No even close.



Not so, I don't know what you mean by hot but from hunting performance the heavier .458 caliber terminal perform is better.

Selecting KE numbers from manufactures means little - it is the terminal performance of the bullet that matters

Because many are still so nostalgic they still shoot 405 grain bullets out of their 45-70, these will be the heaviest recoiling of the 3 calibers,Shooting modern jacketed or monolithic loads in 300 grain range from from the 45-70 or 458 SOCOM recoil will be reasonable.

My wife shoots used 458 SOCOM on a bison hunt to good effect.

The 450 Bushmaster has a faster shooting impulse but again not that bad.

I consider the 450 Bushmaster a modern deer rifle cartridge,
that claim to fame is it can be fired from AR15 platform.
It is best suited for 100 deer yard hunting, yes you can shoot it to 200 yards but there a lots of better choices is your shooting out that far.