I need to load some rounds for a 1933/34 Wobbly mk3 pocket with nitro proof marks. I usually cast 158grn for my .38spl and .357 mag, but also have a mould for SWC 105grn. I have a range of vectan powders, but Ba9 would be my preference and according to the charts is the equivalent of Alliant Unique.

I am reading all sorts on t’interwebs, some suggesting the lighter bullet needs more powder? Can anyone confirm or explain this please? The data and books I have have very little on this cal, and nothing with my powders.

Low bullet weights and powder loads are suggested for top break revolvers, is this mainly for the American stuff that was cheap at the time?

Unlike my last obsolete revolver, this is not a cheap gun that I don’t care about. This one I want to get right!