I have the Lyman 356402 mold, it throws 121 grains with wheel weights, it is a truncated cone boolit. I shoot it mostly in the 9MM sized to .355. these boolits shoot crappy and have shot bad for 20 years. Tumbling is very common and general accuracy is a joke, lube is alox-beeswax.
I've tried Linotype and even dead soft lead with no appreciable change. Can anyone offer some suggestions to get this boolit shooting as it should? I've never slugged the barrel but it shoots jacketed bullets OK and they are .355