I use Brenneke rifles slugs in my Remington 1100 12 gauge 2 3/4 inch . They work well in my modified choke smoothbore barrel and naturally in my slug barrel. I found what Brenneke used to call semi-magnums, a 2 3/4 with a little more oomph. Since I mounted my holo sight and practiced to find proper hold over at extended ranges I can take good accurate shots out to 50 yards, likely much farther with more practice. Brenneke renamed some of their ammo, I haven't seen semi-magnums listed as such recently. Getting the right load for a semi-auto can be a little problematic, the recoil spring only has so much range. Too little and it will stove pipe, too much and things can break. I've read the specs on some of the newer hot slugs and am skeptical my Remington will tolerate them. I'm underwhelmed with the performance of 00 Buckshot on varmints so have my doubts about its performance on Hogs.