Factory lead swaged bullets are so soft that a roll crimp can be used with the bullet shoulder sticking out of the case mouth. The case won't buckle because the is no cannelure.
These bullets fired at 357 mag velocities will quickly convert a 0.357" rifled barrel to a 0.347" smoothbore. You now have a training opportunity in lead removal from a gun barrel.
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S&WHF 366
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