Terry,
I suggest that you first test the action (cycle the action) with the toggle hook disconnected from the recoil spring to feel for any binding, such as from a bent frame rail or warped receiver.
If the action is not binding then reconnect the spring and cycle the action by hand (pull toggle back and release) with a full magazine and observe (do this at a range).
If that works, load a single round (with the magazine in place) and fire. If the toggle does not lock back it could mean that the recoil spring is too strong or the ammo too weak.
KFS
|