I'm with Kevin on this one...........go with the No. 1. If you're hunting something dangerous, make your first shot count. If you need another, you will likely have a couple of PH's with you anyway. As a side note, I have shot a lot of black powder in my number ones....even the 22' bbl of the 45-70 has taken a lot of African plains game for me with 63 grains of 2F and a 405 grain hard cast. The 458 has the 24" bbl and holds close to 100 grains (if you use a drop tube,) I have taken deer and elk with it and a 440 grain hard cast. Recoil with black is mild, but with heavy smokeless loads both calibers are fierce kickers in the relatively light No. 1 (My rifles had the old red Ruger pad on them which is as hard as a drill bit).........Best of luck with your choice.........FWB