You need to buy different sabot slugs, try them all. What I find to work best no matter what shotgun I use are the LIGHTFIELDS EXP 2-3/4" they group excellent, with my Remington 11-87, Mossbergs, amd Ithacas. Last year I took a black bear here in NJ with the Remington 11-87 and the LIGHTFIELD slugs, 1 shot at 50yds.