I shot & killed 2 elk, 1 bullet each, with a Winchester Model 94. It's 16" barrel provided 1,584fps from the .45 Colt chambering, with a cast 300gr. .458" I sized down to .452" after lubing them. The mould was a DC RCBS mould of which I converted one chamber to produce a HP bullet. In my alloy, the flat point cast at 322gr. I used the HP on the Elk. Both bullets exited leaving 1" exit holes.

Both were shot at approximately 75/80 yards. The cow was running, the bull calf was not. Both died very quickly, no further shots were necessary.

That load produced identical ballistics to the 1884, .45/90 Winchester factory load, all from a .45 Colt Revolver ctg loaded to .44 Magnum pressure & is only usable in RP brass due to the feed ramp at the rear of the Winchester's chamber.