 Rifles with non-magnified red dot sights are very competitive with scoped rifle at short ranges, but have a disadvantage at longer ranges.Different options on shotgun chokes and ammunition (from different pellets sizes and up to slugs) makes for interesting choke and ammunition choices based on the stage at hand.Like IPSC Shotgun, the minimum caliber for shotguns are 20 gauge in the Open, Limited and Tactical divisions, only the Heavy Metal division is unique in that it requires a 12 gauge pump action shotgun.