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is this true? I have always been leary

Discussion in 'Ammunition & Reloading' started by bradley, May 4, 2009.

  1. bradley

    bradley salem area Member

    Likes Received:
    Apoligies for the thread drift, but you can use those small pistol magnum
    primers in any load that calls for small pistol. You will gain MAYBE 25 fps,
    10-12 is more typical. Back off your load a couple of tenths to start and
    you will be fine. In my minor 40 cal loads, I saw a reduction from 40fps
    to 15 fps in the extreme spread when I switched to magnum primers--
    they seem to give better ignition with small powder charges.

    Thank you all from a newby reloader
  2. PhysicsGuy

    PhysicsGuy Corvallis, OR Resident Science Nut

    Likes Received:
    Yep, other than slight pressure differences, if need be, you can run magnum primers. Also if you haven't noticed, winchester large pistol primers can be used both as magnum primers, or standard. I don't know exactly why it isnt the same for their small pistol primers, but I'm sure there is a reason.
  3. 284guy

    284guy Woodburn Member

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    For the most part I use magnum primers for all of my loads even if they arent a magnum cartridge.