9 mm - to crimp or not to crimp?

Semi automatic and single shot handguns, revolvers and other pistols

9 mm - to crimp or not to crimp?

Post by snag » 11 Mar 2019, 6:54 pm

I'm just getting into pistols and will be reloading for a 9 mm CZ. Do I need to crimp the necks with a crimping die or is the automatic crimp in the Lee bullet seater enough? I'll only be using light loads on paper targets. Thanks. Snag.
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Re: 9 mm - to crimp or not to crimp?

Post by brett1868 » 11 Mar 2019, 9:55 pm

First thing, don't seat and crimp in one operation as you'll get inconsistent results. Seat first then crimp, you need only just enough to remove the flare / bell created prior to seating. Measure the mouth of a sized case then use that measure to set your "crimp" to. My personal preference is to use the Lee factory crimp die for 9mm :)
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Re: 9 mm - to crimp or not to crimp?

Post by pomemax » 11 Mar 2019, 10:03 pm

same as Brett1868
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Re: 9 mm - to crimp or not to crimp?

Post by wanneroo » 12 Mar 2019, 1:43 am

Same here. I don't like to seat and crimp at the same time. I use the Lee Factory Crimp Die.
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Re: 9 mm - to crimp or not to crimp?

Post by wrenchman » 13 Mar 2019, 10:41 am

same here and i use a lee crimp die with light crimps
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Re: 9 mm - to crimp or not to crimp?

Post by snag » 13 Mar 2019, 11:28 pm

Thanks for that, looks like I'll be buying the 4 die set.

Appreciate the help.
Snag.
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Re: 9 mm - to crimp or not to crimp?

Post by junjun » 14 Mar 2019, 10:30 pm

I used to seat and then crimp with lee factory crimp die. However, I have been shooting more and more, I am still reloading on my Hornady Iron Single stage press. I shoot about 1000 a month, getting lazy so i opted for the seat and crimp together with hornday custom die. I shoot IPSC, where ammo consistence isn't as important as ISSF. I honestly don't think there is much difference. The bullet weight and powder combination on the other hand makes a bit of difference i have found.
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