I use GOEX FFg and FFFg in my rocklocks of course, but appreciate the convenience of Pyrodex pellets so have used nothing else in my Encore 209x50. As for accuracy 295 grain powerbelts over two fifty grain pellets cut cloverleafs at 50 when I can overcome the nasty factory sights. Clean up seems to be a little easier than with real BP, but it's still a few minutes work. I plan to try the 777 pellets when my Pyrodex is gone. Good hunting!