What is neat about this capitalistic society of ours is that folks make things that are needed. Hence, Trail Boss.

Large capacity cases is where it really shines. A 45Colt case is one place a little powder can get lost. Not Trail Boss. A light charge fills the case. That's a good thing for many reasons.

I used it in the 500 S&W Handi-Rifle I used to have. 300gr bullets going 1300fps was plenty good enough for me!
Especially my shoulder!