Oliverstacy,
I'm using BM3 in my Encore with excellent results. So far I have gotten 1 1/4" three shot group @ 100 yds. without cleaning between shots. I haven't gone past 6 rounds with out cleaning. It may can go more...I don't know. Accuracy may improve, if I spit patched between shots. I still have some learning to do with the powder and the rifle. It is real easy to clean, which is what I love about it. It will corrode 25 acp brass cases if you don't wash them soon after firing.
Some have had problems with the breech plug crystallizing, or becoming hard and clogged, where they had to chip out this hardened crud to get it clean. I have had not had that problem.
Give it a try I think you may like it,
Stan