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Crimping Question


Pyre602

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I'm starting to reload on a sdb and have a question about setting the crimp die. I'm reloading mg 115grn bullets, which I think are .355 for 38 super comp. I've got the crimp set to .379. How can I tell if I'm over or under crimping?

Thanks in advance.

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Take the bullet diameter and add the thickness of the brass at the casemouth times two. Say the brass is .010" thick, times two is .020", plus .355" makes a measurement target of .375".

Any less will increase the chance of a case hanging up and the gun jamming, any more and accuracy can start to degrade pretty quickly as well as increased chances of setback.

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