I currently have a Hastings extended turkey choke sized .665 on mine. This one works pretty good, but after seeing what that Tru-Glo strutstopper choke tube did out of my Rem. 11-87, I'm planing on getting a Tru-Glo for my 1300 as well. This also comes in a .665 restriction. <img src=icon_smile_big.gif border=0 align=middle>