Our 357 Magnum ammo adds more power than ever before to the 357 Magnum. This ammo is safe to shoot in ANY all steel 357 revolver - this includes J frames. This ammo is no harder on your gun than any other normal 357 ammo. It is, providing your gun is in a safe condition for use with any normal 357 ammo. #html-body [data-pb-style="62DF82881C1DD"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF82881C1EA"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}