I have not had any problems with pistol primers but about ten years back there was a problem with their w209 shotgun primers. Went with Cheddite and Federal for a year.........
Tried the wsmp in 38 loads and went back to the regular primer since there was no improvement in accuracy.
I always clean the primer pockets before priming so I can get maximum depths and very seldom have a misfire with the win,cci and federal primers.
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