Pierced Primers with RST shells
Rick,
I’ve had this happen quite often with RST shells, I attribute it to the Cheddite primers although I could be wrong on this.
When switching to Winchester primers, problem goes away. If you plan to use RST shells and/or shells with Cheddite primers, I would have firing pin protrusion measured, probably a little long on the right side.
Removing Lifter firing pins is not that hard, reinstalling them can be a little tedious. Measure the protrusion by pushing right side hammer forward while depressing front trigger, this will push the firing pin forward allowing you to measure how far the firing pin is protruding through breech face.
Stan
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