Pellets are WAY more expensive than shooting loose powder. Right now you should be able to get some good deals on powder- with hunting season over, stores are trying to get rid of their stocks.
I've had very good luck with T7 loose in FFG and FFFG. Both have worked well, but the FFFG has given me better accuracy and less crud ring. But for me the crud ring isn't such a big deal because I swab between shots. I'll almost guarantee you will improve your accuracy switching to loose powder as well. You can pick up a powder measure at you local store, or order one through Cabelas or another online store.