Not every gun will handle CORBON’s +P ammo. Our +P products are loaded to SAAMI specs and should only be fired in guns warranted by the firearm manufacturer as being  rated by for use with SAAMI to shoot +P ammunition. Older guns, or guns you do not know the history of, should not be used to shoot +P ammo unless checked by a competent gunsmith. The best source to ask about the capabilities of your gun is the manufacturer of the gun. Our technical staff may also be able to help answer these questions.