| have you removed the pump handle before? Have you changed the rubber bumper on the cocking rod? Is the cocking rod backing out?
This happened to me with my s-5. It was a ball pinching, it didn't seem like it was, because I was totally unable to bring the handle forward. I know it seems a simple solution, I didn't believe it myself...
Look down the feedneck and pull the handle back, check how far back your bolt is travelling...
Has this ever happened with no balls in the marker? If not, then what I mentioned is likely correct. If it happens with no hopper and balls, check what the above poster said....
Just check the cocking rod. Make sure your bolt is going back far enough, if not spin your back block 1 full turn (out) and try that...
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