I have an 870 super slug with a 4.5x tasco scope, shoots 3" mag copper solids. also have an 870 with a rifled sight smooth bore barrel that I will shoot 00 and brenneke's through. last but not least, a model 37/87 ithaca deerslayer,rifled barrel, shoots 2 3/4" brennekes, no scope. all of them are 12 gauge. soon to be added, a 20 gauge, either 870 or ithaca.