Just look at the ballistics. The 444 is a semi-obsolete cartridge that has no advantage of any kind over the 45-70. The 45-70 has 1000s of load and bullet choices, is very accurate and will take any game in North America (and with proper loads in a strong rifle .... anything, anywhere.)
A 44 Magnum Rifle has essentially the same performance as a 444 and, like the 45-70 has 1000s of load options.
Buy a 307 and 356 Winchester, then, with your 444, you'ld have a real "collection" !
