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Posted: 3/4/2021 11:33:50 AM EDT
I picked up some CCI Large pistol primers and when I got home I realized they were magnum.  Shame on me for not double checking.   I picked up the large pistol primers with the intention of reloading 45 ACP using bullseye.  Can I still use the magnum primers and go lighter on powder? Has anyone used magnum primers for 45 ACP?  Thanks
Link Posted: 3/4/2021 12:17:03 PM EDT
You can...  I would just drop your powder charge by .2 grains or so.  Realistically, as long as you're not at the top of the range with your loads, the change to magnum primers will have little effect on overall pressure.  You'll see maybe a 30fps increase in velocity, hence the recommendation to reduce the charge weight slightly to compensate.  The .45ACP operates at fairly low pressures to begin with, and gives you a lot of safety margin (as compared to, say, .40S&W - talking 23Kpsi vs 35Kpsi).
Link Posted: 3/4/2021 1:01:48 PM EDT
Thanks Tom488,  I will keep that in mind and test a couple on the low end.
Link Posted: 3/5/2021 9:17:44 AM EDT
I've do it for years. Just stay away from the max loads and you won't even notice a difference.

Where did you find the primers?
Link Posted: 3/5/2021 10:46:25 PM EDT
Thanks Luger.  I found them at Cheyenne mountain.
Link Posted: 3/8/2021 1:26:26 PM EDT
Link Posted: 3/8/2021 3:09:23 PM EDT
[Last Edit: 3/8/2021 3:14:35 PM EDT by federaldragon]
Thanks for the info NZT
Link Posted: 3/11/2021 1:29:49 AM EDT
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