Buffalo bore offers 45-70 ammunition that is externally identical to saami spec 45-70 ammo but internally it generates far more power and pressure.So their 45-70 ammo will fit into any 45-70 firearm but is not safe in every 45-70 firearm.Its use should be limited to the following firearms: all marlin 1895 (1895 marlins are all model 336 actions chambered in 45-70) iterations made since 1972 all browning 1885 and 1886 copies rossi rio grande new england arms handi rifle t/c encore all falling block actions made of modern steel such as ruger #1 and #3 shiloh christian and persoli sharps all winchester 1886 iterations made since 1915 and all siamese mauser bolt actions.Caliber: 45-70 GovBullet Type: Semi-Jacketed Flat Point (SJFP)Bullet Weight: 350 grMuzzle Energy: 3591 ft lbsMuzzle Velocity: 2150 fpsRounds Per Box: 20Boxes Per Case: 12Application: Target ShootingCasing Material: BrassHazair: Yes