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Discussion Starter · #1 ·
hi all, i'm new to the forum, 1st question.
I am new to reloading personally, been helping older generations for years and learning. watched my grandfather create some brass to fit his needs.

here is my question, can I trim down 9x21 brass to 9x19? I have read from others worried about headstamp but i'll be the only one picking up the brass and worried about headstamp. I usually shoot .45 acp and just bought the 9mm for the wife. with ammo more popular than a cheerleader on prom night and brass the same, i found a GOOD deal on the 9x21 and thought to just trim it down to fit my needs.

any help, would be wonderful :D
 

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The 9x21 has a smaller rim diameter, which may or may not cause ejecting problems. I would measure wall thickness after trimming one back also. The 9x19 works in the 9x18 because the Mak has a larger chamber so you have to blow out the reworked 9x19 to fit. Hope that makes some sense.
 
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