250 gr. barnes expanders and 250 gr. bonded shockwaves shoot really well out of my KRB using 110 gr. of FFF triple seven and a triple seven primer. The 385 gr. great plains conicals shoot fairly well using 90 gr. of triple seven, but the 410 gr. GP conicals shoot better. I've got some 375 gr.SSB bullets I've been meaning to try for a good bit now, but range time has been very limited for me with workprojects and family time. I'll post some results when I get to shoot'em.