Just finished a course today where I fired over 1200 rounds of rifled slug ammo through a smooth bore, no choke using a ghost ring sight with a front post. No problems out to fifty yards but the sights start taking up a alot of target area after that. Can consistantly hit man sized chest areas out to 100yds, but that was only after a lot of shooting and getting to know the gun and letting the gun get to know my shoulder