My gunsmith said my NEF modified was not thick enough at the length I wanted the barrel. I ended up ordering a turkey barrel from New England. It is a 3-1/2", and 2 oz turkey loads will thump you to put it mildly. Sometimes after patterning it, it takes a few seconds to remember what I was doing. With a kicks 0.660 i have never seen a gun that will pattern #6 lead as well. I carry it sometimes when hiking in the mountains b/c it is so light. I know what it will do and I don't ever care to pattern it on paper again.