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Old June 17, 2001, 12:27 PM   #1
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Join Date: June 4, 1999
Posts: 142
Changing to magnum primers

After loading about 1500 9mm rounds, I finally ran out of standard primers. I do have CCI magnum primers on hand and have considered using them (I would reduce the load). I am shooting a 129 gr lead bullet over 3.5 gr of Bullseye. This will be used in a Beretta 92F.

My question: If I would switch over to the magnum primers roughly how much should I reduce the powder load? I know this is a question that has no right answer but a ballpark figure would be helpful.

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Old June 18, 2001, 02:56 PM   #2
Walt Welch
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Join Date: November 3, 1998
Location: Alamo, CA
Posts: 424
Buy some standard primers. There is no way to figure how much a magnum primer will increase pressure, and in the small 9 x 19 case, using a fast flake powder like Bullseye, a magnum primer is not needed.

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