Brass not crimping tight

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  • Last Post 10 April 2021
Dieselherb posted this 10 April 2021

Somewhat new to casting. I'm casting 300 blk out 230 grain 45 45 10 lube. I have fired these brass several noticed some don't crimp tight. I'm using Lee turret press, Lee crimper.

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99 Strajght posted this 10 April 2021

Check your case length. Make sure all the cases are the same length and adjust your crimp die to fit.

Glenn

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Dieselherb posted this 10 April 2021

All casing same length. Been using the same settings for 500 or more reloads. Wondering if these cases are tired out?

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Eutectic posted this 10 April 2021

Brass work hardens. Used cases take more force to crimp. You might try annealing the case mouths

Steve

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Dieselherb posted this 10 April 2021

Thanks

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