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magnum primers

A

alanwk

Member
Joined
May 21, 2009
Messages
136
Location
El Paso, TX
Can we use magnum small pistol primers in 9mm/40sw/45acp with HS6 or Unique or Titegroup? I have all 3 powders.
 
I do it all the time and have for many many years. I interchange small pistol and small pistol magnum primers and don’t change any part my loads data. No difference at all in velocity or performance.
 
Primers can make a difference in velocity and pressure, so always start a bit lower and work up when changing them.

That said, without a chrono it's unlikely you'll notice the difference, and they'll likely all go in the same group up close.

Here is a test in 9MM with different primers.

9MM Primer Test

OK, so everything in the test is not "perfect" I still think it's a good test and that, the results will be interesting and helpful, and I appreciate Walkalong taking the time to do it and post the results for all of us. And this is the goodest comment I've read on this line of thought.
www.thehighroad.org
 
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