Thanks guys. I would guess then with my renegade with the .58 GM barrel 1:70 on it and shooting 100 gr of Goex FFg I'm likely getting about 1450-1475 fps giving me upwards of 1275 FTLB of muzzle energy. That should be more than adequate for any whitetail out to 100 yards and I believe would also wreck a black bear's day.
I plan on using my .58 this coming week here in PA and later on in November for blackies.