The Underwood Xtreme Hunter ammunition is a heavy .45-70 Government hunting load built around a 325-grain copper solid projectile. It uses nickel-plated brass cases and flash-suppressed powder to support reliable feeding, corrosion resistance, and reduced muzzle flash in low-light conditions. The cartridge is produced for rifle use and is presented in 20-round boxes suitable for hunters and experienced shooters requiring a high-mass, hard-hitting load for medium-to-large game.
Key Specifications
- The cartridge is chambered in .45-70 Government.
- The bullet weighs 325 grains.
- The bullet is a copper solid construction.
- The listed muzzle velocity is 2275 fps.
- The muzzle energy is approximately 3736 ft lbs.
- The cartridge cases are nickel-plated brass.
- Each box contains 20 rounds.
- The cases are boxer-primed and reloadable.
- Intended application: medium-to-large game hunting.
Designed for shooters who require a heavy, reliable hunting load, the Xtreme Hunter pairs a high-mass copper solid projectile with nickel-plated cases and flash-suppressed powder to deliver consistent performance in field conditions. Its construction and loading are optimized for deep penetration and dependable function in popular, real-world firearms.





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