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Mag Primers OK???

partisanpartisan Member Posts: 6,414
edited August 2009 in Perry Shooter Competition Shooting and Reloading Forum
Is it OK to use small pistol magnum primers for .38 spl and .40 S&W rounds?
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Comments

  • Rocky RaabRocky Raab Member Posts: 14,438 ✭✭✭✭
    edited November -1
    That takes a two-part answer.

    Performance-wise, reduce your usual load by 5% and test with the new primers. Work back to your original load's velocity, if required.

    Gun-wise, magnum primers are sometimes harder to ignite - so your gun might not fire them at all if the firing pin strike is light for any reason.

    If they fire and you carefully work back to no higher than the usual velocity, you should be fine.
    I may be a bit crazy - but I didn't drive myself.
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  • bpostbpost Member Posts: 32,669 ✭✭✭✭
    edited November -1
    I would also tend to shy away from the super fast powders like Bullseye. A recent article I read gave me additional caution for substituting mag primers with fast powders. A full case of medium to slow powder did not seem to be an issue.
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  • partisanpartisan Member Posts: 6,414
    edited November -1
    Thanks for the very informative answers!
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