I just found and purchased 5 lbs of Blue Dot, it would seem to be the best powder for my 10mm and while perusing my books I see it can be used in most everything I shoot, in handguns. I'm just set up to load 500 38 spl+P cases, I'm going to try Blue Dot in these with a low end 357 load and 158 gn jacketed bullets. I don't own a 38 spl so no chance of getting them in the wrong gun and all the cases are headstamped "+P". Saving my last 3 lbs of 296 for full house loads in my 44 and 357. Hoping the Blue Dot loads will cycle the action of my Coonan...........
Blue Dot would seem to be a decent alternative compromise powder for a lot of different cartridges, my books show loads for 45 ACP, 10mm, 357, 44 Spl and Mag, 45 LC, 38-40 and 44-40, also seems like it is usable in my 32-20 and 25-20 with cast lead if necessary.
Can lay my hands on a few lbs of PB, but know nothing about this powder..........seems to be a touch slower than Bullseye in my loading manuals, but very little data for it, anyone have experience using PB in pistol cartridges?