My Encore 209X50 shoots the 250 gr TC bullets with 2 X 50 grain 777 pellets and a magnum shot shell primer very well, about moa well. It will shoot about any bullet pretty well, but not quite moa. The groups seem to improve the more I shoot it, imagine that. I hunt elk with mine and was told the 250 grain bullet was too small, so I shot some 300 grains with no real difference at a 100 yds in point of impact, and patterns were good with both. I tend toward a faster bullet and shot my elk front on last year at about 130 yards with the 250 grain tc. He went about 30 yards.