Hi, I am interested in a shotgun for home defense and a few outings to the range a year. I have used a shotgun back in my younger years but it is been a while since. From what I remember The recoil was always a bit of an issue. I am looking at pump versus semi auto shotgun's now. As a point of reference, I am 5 foot 6 and 150 pounds. As far as the recoil and reliability, any suggestions on one type versus the other as well as gauge choice? Thanks