i got a new beretta a300 12 gauge for my birthday this year. i haven't had a chance to try it out yet because of the blizzard going through the midwest. i'm about ready to just get some 12 gauge dragons breath and get a job clearing out driveways. anyway's, can i shoot 2 3/4" remington sluggers out of it? i'm trying to prove to my dad that it is safe to shoot slugs out of a "buckshot" barrel. by buckshot barrel, i don't mean the little 18" HD barrels, i mean every smoothbore barrel in existence. my dad thinks every shotshell is either buckshot or slugs. before this turns into a rant... can a shotgun that is built to be a waterfowl gun (magplug pre-installed) handle a 1 ounce rifled slug? the gun came with 3 chokes: IC, M, and F.