they do operate much cleaner than a gasser. all that soot gas does not go through the mechanicals. the DO have MORE kick than a gasser, but less than a pump. the 3.5 inch guns may (or may not) have trouble consistently cycling light trap loads...but they will say that up front in the owners manual on recommended loads if that could be an issue. my hunting buddies that use them sure love them. the only one i have shot was the benelli M2..nice, nice gun ...and light weight, which may have something to do with the increased recoil.