A few years ago I bought a LOT of reloading stuff. I was just getting into it and really didn’t have a mentor. I bought the powder choices that I remembered reading about. 8lbs of Bullseye, 8lbs of HS6, numerous 1lb containers of 231,2400,Unique, Lil Gun, H110, W296etc.
I’ve loaded some with all of them. I ONLY use Lil Gun in my 50 Beowulf. But my 5.0grs of 231 and a PCLRN 230gr in my 45 Glock shoots into 1 hole at 15 yards. I tried bullseye but found it to meter worse than 231 for me and was dirtier.
I know Unique is versatile, I’ve loaded it in everything I’ve loaded including 45/70 and 308 (10grs is a HOOT in both of those)
I have a supply, that can’t justify buying anymore powder right now.
I also have been given and am using some 43 year old SR7625 in my 45ammo that is working great.