I just received an order of custom loads for the 458 Winchester Magnum with the assistance of Grizzly Cartridge Co.

Target 458 Win Mag Ammo
420 grain WFNGC hardcast bullet
Muzzle Velocity 1500 fps
Very mild recoil and fun to shoot
This will also take large game

Reduced Hunting 458 Win Mag Ammo
400 grain Hawk .050 heavy copper jacketed round nose soft point
Muzzle Velocity 2000 fps
35 - 40% less recoil than 500 grain factory ammo
Great for North American hunting and African plains game

Both of these are for sale at KDM Custom Bullets