Not neccessarily Rogmatt, Read that Brenneke article. If you do not want to read the entire article just scroll down to where it starts "Slug Ribs" and read from there. It is interesting and informative, especially what it says about the rifling on shotgun slugs and how it acts and reacts in a rifled barrel and how much spin it imparts to the slug (minimal). I learned a lot from the article. There are quite a few of us out here that do, more occasionally than not, shoot rifled slugs from rifled barrels, and some with good results!!! It may not be politically correct, but then neither am I. And thanks to you offhand35, for referencing the article and posting the link for us to read. I still want to find some "KO Sabots" to try in my Tracker II....<><.... :grin: