My standard goto for my S&W Model 57 with Lee 175 LSWC was 7.3 Unique. That was after varying the charge over a range. When Unique was unavailable to me a few years ago, I successfully switched to 6.5 Bullseye and got equivalent performance.
I recently bought a quantity of Berry's plated 210 FP and have had lousy results with either 8.5 and 9.0 grains of Unique.
Looking for suggestions....Do I need to go higher or lower? Switch to Bullseye, and if so what's a good starting point.? Those are the only powders I care to inventory.
TIA for any help...