Buffalo Bore loads their ammunition up to maximum SAAMI specifications, which delivers devastating performance on a wide range of game. Please note that this ammunition is safe to fire in any 10mm pistol in safe working condition. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases. Owner of Buffalo Bore Tim Sundles on Heavy 10mm Ammunition: The Buffalo Bore Heavy 10mm ammo is the result of many years of customers requests that we produce several such loads for the 10mm. These are the absolute heaviest bullet that can be fired through 10mm pistols. With it's flat nose it will penetrate straight and very deeply into muscle and bone. Straight line penetration into living tissue will exceed three feet. These loads bring out the full potential of the 10mm, but operate at standard pressures and as such, are safe to use in any standard 10mm pistol. We are using flash-suppressed powders so your vision will not be materially affected should you be requ...