Layne Simpson traces the 45-70 Government from its 1873 military origins to its continued role as a powerful and practical big-game hunting cartridge. The article explains the different pressure levels required for Trapdoor Springfields, modern lever actions, and strong single-shot rifles, while covering bullet choices, crimping techniques, case-length considerations, and powder options such as H322, IMR 3031, H4198, Varget, Blackhorn 209, and Trail Boss. With the right handloads, the 45-70 remains a highly effective cartridge for deer, elk, moose, and other big game, proving that this historic round still has plenty of modern hunting value.