Allen is one of the guys I hunt with, and hand load for , rather regularly,
cast and use gas check,300 grain bullets, bullets from 95% WW alloy and 5% tin,
10 grains of blue dot works well, (accurate) and about 1000 fps in the rifle but your limited to about 120 yards , due to trajectory and retained energy
the bullets are lethal enough at that range for deer and hogs but don,t expect spectacular kills according to Allen
hit where you need too and they kill very well
https://leeprecision.com/mold-6-cav-c452-300-rf.html

https://www.marlinfirearms.com/lever...1894cb-45-colt

http://www.handloads.com/loaddata/default.asp?Caliber=45%20Colt&Weight=All&type=Hand gun&Source=