You can shoot hot loads out of the Marlin and Winchester 94 rifles in .45 colt. 290grain hard cast bullets at 1350fps = 1150 FPE. 255 gr @ 1,550 fps for 1,361 FPE and a 260 gr load at 1850 Fps for 1975 FPE.

These are Buffalo Bore or other premium ammo loads. Not to be used through any of the Italian pistols, small frame Vaquero 2, or the yellow boy Italian rifles. Not sure about the Henry or Rossi (not a fan of Rossi). Good to go in Freedom Arms, Ruger red/blackhawk, large frame Vaquero and Winchester and Marlin '94 lever guns.

The .45 Colt in the right firearm is more than enough for deer under 100 yards, and when hand loaded or using specialty loads as listed above, it can exceed .44 mag performance.