45-70 Govt – 300 gr JHP – Winchester (X4570H) – 200 Rounds

The 45-70 Government has been taking big game since 1873, and it remains a top pick for hunters who want a heavy bullet in a handy lever gun. This listing is Winchester Super-X 45-70 Govt 300 grain jacketed hollow point ammo, MPN X4570H, sold as a 200 round case. It is a fit for deer, elk, hog, and bear hunters who carry a lever action in thick cover.

Winchester rates this load at 1,880 fps with 2,355 ft-lbs of muzzle energy. A 300 grain bullet of .458 inch diameter makes a large wound channel even before expansion, and the hollow point adds quick, reliable opening on deer and hogs. The flat nose shape is safe in tube magazines. The trajectory is curved compared with modern bottleneck cartridges, so most hunters keep shots inside about 150 yards. This is big game hunting ammunition, not a plinking load.

This ammunition fits rifles chambered in 45-70 Government, including the Marlin 1895, Henry Side Gate and Henry single shot, Winchester 1886, Browning 1886, Ruger No. 1, and Thompson Center Encore. A common question is whether modern 45-70 ammo is safe in an original Trapdoor Springfield. Standard factory 45-70 loads are kept at modest pressure because of those rifles, but any original trapdoor should be inspected by a gunsmith, and never fire ammo labeled for modern lever actions only. Another common question is whether 45-70 and 45 Colt are related. No. They share a bullet diameter but are entirely different cartridges.

Winchester X4570H is new production ammunition, not reloads, made in the USA. It uses reloadable brass cases, boxer primers, and non-corrosive components. The case holds 10 boxes of 20 rounds for 200 total from one lot, a supply that can last a lifetime of hunting seasons for many 45-70 owners. Practicing with your actual hunting load is the best way to learn its holdover and recoil.