Home Forums Hunting & Shooting Express Rifles and Big Bores Only The great 458 Winchester. Everyone should own one at least once

So a 550-gr Woodleigh at 2500 fps does not "over expand" on a big bison.

There are a few giant bison out there, and Sir Woods found one of them with his 460 Weatherby Magnum Mark V.

The heaviest wild bull for B.b.bison ever recorded weighed 1,270 kg (2,800 lb) while there had been bulls estimated to be 1,360 kg (3,000 lb). B.b.athabascae is significantly larger and heavier on average than B.b.bison while the number of recorded samples for the former was limited after the rediscovery of a relatively pure herd.

https://en.wikipedia.org/wiki/American_bison

The 550-gr Woodleigh at 2100 fps MV with the SAAMI .458 WM (3.340" COL) would have likely work just as well,
expanded less and penetrated deeper,
and it would have been easier on the shooter's shoulder.
Another good choice for bison:



The North Fork penetrates deeper as velocity increases.