I use Trailboss in some of my strong antique pistols but am going to unique.
The Trailboss makes me nervous because it has a steep pressure curve and actually peaks pretty high. It's great for light loads in modern guns and it's nearly impossible to over fill a case but I'm not convinced that it's actually all that gentle on the old irons.[/QUOT
I agree whole-heartedly...Trail Boss is not a "low pressure " smokeless powder that can be used as a replacement for Black in "all antique situations", granted it can be used in some "light smokeless" loads, the same precautions must be adhered to as any "low volume' smokeless powder. It is a bulky powder that fills case space and works well in "reduced" smokeless loads for cowboy shooting in modern firearms. The "bulkiness" does not make it a Black powder sub., it just lessend the chance of a "double charge" in a large (ex..45 lc) case.