I do 115-120 grains with a 250 SST. Last Fall I had my cronograph while a buddy & I were sighting in our M-Ls. He always raved about "Shockey's Gold' powder. 120 grns in my Knight gave a steady 1950fps across the crony. His 120 grns of SG was 250+ slower & all over the place fps wise. I know speed isn't everything but his grouping wasn't anything great either. I let the crony do the talking & soon afterward he switched to B209. I had thought about backing down some on the charge, to 110 or so. I shot 5 deer last year with the SST & all were pass-thru's. One may of done a 50 yrd charge but most <20yrds.