My son has the same gun, if its exactly the same, the smooth bore barrel is ported which helps with recoil, but makes is LOUD.

My son has shot lots of ducks and geese, a 140 lb deer and a 20 lb turkey with his. For the turkey he an the full choke with 3 inch #5 shot. It patterned well out to 30 yards, but it does KICK. When he was patterning it, after one shot he started flinching so I finished and due to the short stock I basically punched myself in the nose! Watered up my eyes!

The turkey didn't seem to notice it was a "little" 20 guage, he just sort of flopped onto the ground and the deer took the slug through both shoulders and out the other side, and sort of fell down.

GREAT gun!