I remember back in 1970's... Pa hunters talking about the Deer Slayer Barrels... Like the Model 37 big time... Sure took a lot of game with it... The barrel was a 30 inch full choke... I even killed a few grouse with it .. Not bad for a full choke gun... I did get me a 20 Inch cylinder Deer Slayer barrel...I was going to buy 4570 Lever action. I have decided that should I still hunt I'm going to use the Model 37 pump with that deer slayer barrel... I had a Leupold 1.5 pistol scope on it and I removed it and will use it for a pistol..... I'm looking forward to using the Deer Slayer for deer.. I don't think I will remove the plug .. I know I can do.. 3 shots are plenty for me.. Maybe?