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  1. .357 math??

    Quote Originally Posted by bellyfat View Post
    if i am correct; .380,9mm, .38 cal. and .357 are all the same diameter. just different sized cartriges and powder charges.
    why is a .357 mag called .357 if they are the same diameter?why not .38 mag?
    I'm sure some others have already covered this. The .38 caliber bullet is actually British in origin as its bullet was shaped like our modern .22.... its base actually smaller than the rest of the bullet. Therefore.. the bullet diameter and the brass casing diameter is the same. We Americans ...