Hunter Jim - Why doesn't he just pick up an 1895M and save himself all that time and expense. Since the .450 Marlin is close to a .458x2 American which I believe the .416 is based it would seem to me it would be easier to find the .458 dia. loading components than the .416 which doesn't offer many bullet profiles for loading into a lever gun. But I guess if you got to have one you got to have it! CEJ..