At a competition last year, all and sundry were having stoppages and fails, the eventual winner was shooting a standard Mossberg 500! I believe though that the Benelli's, Vepr's Saiga's, Typhoons and the like will usually carry the day but I choose to shoot left field with either my PM5, Ithaca 37 or 1187. Whichever one I use gives great performance (as long as I do my bit!) and bags of fun!