Jeff423,
Basically IMHO, you're just wasting your TIME AND MONEY.
This firearm has been worked to death by CHAMPIONS OVER THE YEARS.
SWEDGED LEAD HOLLOW BASED FULL WADCUTTERS FULLY SEATED IN THE CASE. (NOT CAST, OR DEWC)
ROLL CRIMP.
2.7/2.8 Grains BULLSEYE POWDER.
Sorry, but THE WHEEL DOESN'T NEED REINVENTED.
Competitive Shooters have moved on from the MODEL 52
THAT'S WHY "MATCH" FULL WADCUTTER AMMO IS "EXPENSIVE"
AND HARD TO COME BY, Demand has went away.
This ammo used to be produced by the MILLIONS & MILLIONS OF ROUNDS, no more I'm afraid.
Good Luck with your future endeavors.
MOONMAN