I have a plain barrel 20" 1/9 (factory stock) that I put a Rock River NM trigger in. At 100 yd with a scope off the bench I get about 2 1/2" with SA,XM193 about 1 7/8" and wallyworld win 45gr VARMINT 7/8". Have tried high grade .223 such as black hills and fed gold medal and the lighter bullets do almost as well as the Win VARMINT. With the factory BM trigger I was nowhere as good,larger groups and some fliers. I also have a BM carbine with a izzy (14+barrel +break) which shoots ever so much looser but not much.