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: Hard Cast Lead Flat NoseBullet Weight: 430 grMuzzle Energy: 3537 ft lbsMuzzle Velocity: 1925 fpsRounds Per Box: 20Boxes Per Case: 12Application: Hunting,TargetCasing Material: BrassHazair: Yes