1. I like the 3 1/2 in for longer range geese, but it works great for knocking em down when decoting if u r havin a bad day
2. it kicks a little, but put on the limb-saver recoil pad and you can't feel it when you shoot
3.I use a 3 1/2 in benelli SBE, it works great, and for pumps i use the benelli nova, just put a little dab of oil and wipe off most of it when the wheather is cold so it doesnt gunk up
Good luck and shoot straight