I own a 27" SxS which clearly shoots 6" low for me, both barrels on a pattern plate. Not sure why. Can't hit anything with it. I do much better with high shooting guns, specifically O/U's. I have shot a lot of competition target shooting and I have read, and believe the more one shoots the higher shooting gun that shooter requires, ESP in the discipline of trap shooting. I guess this is one reason I shoot O/U better than SxS, but I truly believe most SxS's shoot lower than O/U, and whether this is due to muzzle flip, I'm not sure??