Well I have a bunch of Blue Dot to use up somehow, so I just figured 12 grains was safe enough...and mine is a EMF 92 not a 73, so I'll probably not have anything happen. The reason I stuck to just 12 grains is in case I slipped one into a Colt type revolver by mistake, it would not be a bomb.
I don't want to waste a whole 5 pounds of this stuff, I have nothing else to use it for. It does seem to work well enough in the 24" barrel, and 12 grains of this has more punch than any factory "Cowboy" load, so I loaded up a bunch of these for the 92. Don't plan on going any hotter, really no need for that in my case. When playing around with this Blue Dot and the 45 Colt, it didn't seem to be acting right and consistant till I hit close to 12 grains, so I just kept it there and loaded a bunch. Can't find much data on Blue Dot and the 45 Colt, but what I did find says 12 grains and a 250gr rnfp hits 900/910 fps out of a revolver with a "longer" barrel. I figured it might work out of the 92 even better, hope I get the same kind of velocity gain Atlaw got. When the Blue Dot is used up I already planned to use something else in this rifle. I've read about the Blue Dot recalls, that bugged me...and using them in certain magnums was not good, that bothered me some when I read that too. I need to find a combination where the book says about 900 fps for revolvers, because the rifle is sighted in the way I like it for a load like that. I don't have a need for anything faster or harder in that caliber at this time. Anyway, so far, Blue Dot is working fine in this rifle, no complaints and I got deal on the powder.