It is my understanding that the .45/70 case will not work through a Win. M94 action. But, Win. does make a .45 Colt M94. The problem with the .444 marlin round is that it has a rifling twist (unless this has been changed) of 1/38", that is only good for pistol bullets of the 240 to 265 grain range. Hence, it is NOT particurly suitable for big, heavy-boned critters like grizzlies , brownies, or moosies.

Keep yore powder dry!!