I use 120 grains bh 209 and either 285 gr. Barnes spitfires or 300 gr. speer gold dots mostly. They both shoot very well with nice groups. If I use less than 120 grains of powder I get bullet tumble. My muzzle velocity is right around 2050 f.p.s. with both bullets. I use the supplied yellow sabots with the Barnes and Harvester short blacks with the Speers. I have one of the original stainless, laminate omega's so the barrel isn't too tight at all.