Quote:
Originally Posted by The Reaper
Military primers are harder than commercial primers.
IIRC, many of the military weapons, including most self-loading and almost all full-auto small arms (to include the M14 and M-16 series), use a floating (inertial) firing pin. You can see that the pin makes contact on the primer of the unfired rounds during cycling.
Now some commercial primers are harder than others. I do not recall the sequence, but if it worries you, you can find out and select the least sensitive for loading in the weapons with the floating firing pins.
I have never had a problem with the commerical primers in many thousand rounds of reloading, but I suppose it would only take one firing in an unlocked weapon or while loading to ruin your day.
HTH.
TR
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Actually the CCI #34 and #41 milspec primers aren't using harder cups, but rather different anvil geometries (relative to commercial primers) making them harder to detonate and needing a firmer strike by the firing pin.
Some commercial cups do vary, but they're all brass and not hard per se.
Chris