If you're using the Rapine single-grease groove bullet, then lack of lube is definitely your problem.
I have to add extra lube to the bullet at the interface to the black plastic tubes...
I cast my Rapine bullet. Dip the base into lube (MCM lube). After it cools, then I run it through the sizer. LEAVE the excess lube on the bullet (it comes from inside the sizer...
Then I seat the bullet into the Black Case. Any excess lube is then wiped down so that it forms a fillet/bevel at the front of the case... It will not interfere with closing the breech in any way.
Without this extra lube, my gun goes from a one-holer at 50 yds to hitting-the-ground-in-front-of-the-frame at 50 yds after 6 shots...
-Boots
Mike 'Bootsie' Bodner
Palmetto Sharpshooter's, Commander
9996V
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