I just got a new cantilever barrel for my shotgun. Could you guys recommend a good shotgun scope for around $200? Also, the barrel is only 20 inches, that seems short to me but I have never had an optic or a rifled barrel on a shotgun. I got a good deal on it so I figured what the hell but now I am doubting it. Just wondering with the scope, will the 20 inch rifled barrel be ok for say 125 yrds and in, or should I look into a 22 or 24 inch rifled barrel? Also what about affect on velocity? I have never dealt with sabot ammo either any recommendations would be helpful. Thanks