New Ruger Bisley Flattop in 44 Special; 4-5/8".
New LBT 4-cavity mold/.431" WFN when throwing ACWW and sized with RCBS .431" size die, they measure .430".
Used new Starline cases, run over Redding Dual ring carbide sizer then Redding expander die/.426". Seated so the bullets would be a light push fit into the throats of the cylinder throats which measure .430" to .4305". Redding profile crimp.
All groups shot over sandbags @ 25 yds. 5-shot groups were dismal 2.25" to 5.25". Loads were 6 to 7.5 gr Unique in .5 gr increments and 7 to 9 gr of Power Pistol in .5 gr increments.
I'm thinking I might want a .432" sizer die but no one makes them so was wondering if one could/should open up the sizer die to .432".
Am I on the right track or does something other than opening up a sizer die might come to mind?
Alan