ORIGINAL: Mr.Flintlock
I agree with nchawkeye in that I use 3-f in everything from mt little .32 to my .62. Not only does it shoot cleaner but you will get more velocity with less powder. That adds up to more shots per pound of powder. I shoot round balls with pillow ticking in all of my rifles. I lube my patches with olive oil,bear lard,crisco and sometimes spit patches. All work well but you will need to do some cleaning between shots.
I use 3f also now, 80g. I shot a can of 2f, but I didn't like how it burned, I felt it was dirtier. Also when hunting if you run out of 4f for primer, you can use 3f, so you have backup when you fumble and run out of primer powder. You do get more shots also, but mostly it is a lot cleaner shooting.
Chap