Thread: K frame and +P rounds
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Old 03-22-2019, 07:50 PM
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flagman1776 flagman1776 is offline
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I also used SuperVels as duty ammo "back then". I have always used S&W's official statement in the 1970s that model marked K frames were safe to use +P ammo in. As originally loaded, +P did run higher pressures than standard loadings.
Times have changed. I don't believe recent +P loadings generate pressures above the specs. Could it be because of improvements in power or bullets? Maybe. Could it be because ammo makers corporate lawyers run the show now? You tell me.
I'll tell you that when I switched my duty gun from a 4" M19 (-3) to a 4" M66-1 that the SuperVels cratered the primers & locked up the M66.
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