I like Unique a lot for mid-range revolver rounds (it's perfect, IMO, for making non-magnum rounds in magnum-sized cases, like 41 magnum or 45 LC). It's not as flashy as, say, Blue Dot or AA#7, but it's pretty flashy. I can see the B/C gap flash pretty frequently with my .41 loads of Unique. If I were trying to knock down flash at 38 special levels with light bullets, I'd probably first see if I could get the velocity I wanted out of AA#2. If I couldn't, I'd look at Silhouette for another ~100 fps. Those two powders are a couple of spots before and after Unique on many burn rate charts, and both are low-flash powders that also don't generate a ton of extra recoil. Of course, I happen to have all of those powders on my shelf already.
