first of all and MOST IMPORTANTLY, you need to find out what twist rate your barrel is.Rem. barrels are usually a 1:28 twist where as Hastings barrels are a 1:34 twist. If your twist is under 1:28, forget about the high speed, light bullet slugs, they simpley will not stabalize and will shoot all over the place. i know slugslike the core lokts and hornadys SST's look pretty, but if you dont have the proper twist rate, dont waste your $$$. On my setup, the bore sizehastings and rem. buckhammer slugs shoot best with the attached sabot tail. witha red dot sight i can shoot 2" groups @ 50yds all day. also, worth a mention are the brenneke golds, they have shot well out of anyslug gun for me.