I've got one of these barrels on my Ruger Mark II. It is extreemely light and very accurate. The only issue I am having with it is failure to feeds requiring me to push the bolt forward to fully chamber the round. I have experimented with CCI, Federal, Winchester, and even SK JAGD ammo with the same results. I am at a loss to what to do. Yhis is starting to really mess up my Bullseye scores. Since this gun is at least 15 yerars old, I am going to try a new recoil spring assembly. Another shooter suggested having the chamber reamed out slightly. I have heard nothing from T/S about this so I am open to any suggestions. Has anyone else experienced this with a T/S barrel?