Buffalo Bore loads their ammunition up to maximum SAAMI specifications, which delivers devastating performance on a wide range of game. Loaded with a hard cast, penetrator bullet, this ammunition is designed for game where 5 to 6 feet of straight line, non-expanded penetration is needed. Please note that this ammunition is not intended for older guns. It is made for modern firearms only, as some of the ammunition could damage older and weaker firearms. Intended for use in Marlin 1895 made since 1972, Browning 1885, 1886, New England Arms Handi-Rifle, Ruger #1, #3, T/C Encore, Shiloh, Christian, Petersoli Sharps, New Production Winchester 1886. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.