Greets,
Well gee, I bought 2fg for my .50 when I bought it, and kept getting the 2fg for any serious shooting and hunting work. BUT I had a can of pyrodex P ( 3fg ) left over from my .36 navy days, I use it now in the rifle simply cause I ran outta 2fg, maybe I will do some real target shooting with her to see if it is better with that stuff. Best I got with the 2fg was 6" groups at 100yd, course I was pretty naive about BP then and was loading a higher charge than really needed just for the extra hit.

Just my uneducated opinion!
Terry