Tried mine out, start with 25 x 2 3/4 buck. Pleasantly cycled all in semi auto no issues. Even hip shooting. moved to target load, will not cycle as suspected. tried some 3" high brass. That's when things started going bad. double feeds and empty chamber not drawing from tube every once and a while but getting worse. Near the end could not get any to draw from the tube. The problem is the bolt release lever is sticking or binding. its not grease as i just cleaned it. I'm going to pull it apart see why its not moving freely.