Greetings
I use 3F in near everything unless I already have a 2f load worked up that gives good accuracy. I still have a few pounds of 2f in my stored gear but as it disappears, I as of yet have no intention of buying more. The 69 and larger muskets are still a toss up which way I am going.
Same in BP cartridge. I find 3F to meet my needs better. Best shooting powder in my 50-95.
Mike in Peru