Hi panzernutter, your cycling problem could be several things, but we can start with the most likely and work forwards from there? The first test we have to try, is to load one round of the Winchester 115 ball target / range ammo in the mag and fire it downrange! This is to verify that the toggle mechanism locks open as it should. Repeat this test several times to insure we have plenty of leeway and it wasn't just a freak borderline result. If it does not consistently lock open with the one round test, you have something dragging or sticking in the gun, (dry or lack of lube) or you have too strong of a mainspring, (not likely). At any rate, you should have some information provided by this test to go further on. And that would be inspecting the disconnector / trigger lever interface. Either the disconnector pin in the end of the sear bar is stuck or sticking, or the trigger lever is not moving back out of the way when the bolt closes and the receiver moves forwards, in which the disconnector pin can't push forward to reset... With the gun unloaded, you should be able to pull back and release the toggle assembly, and pull the trigger, but, do not release the trigger as you normally would, but let it go forwards slowly all the while listen for the tiny click which tells you the disconnector has reset, and it will then allow you to again pull the trigger and release the firing pin? This has to happen every time consistently same as the hold open test.... So, we may have a recoil / interference issue, or a trigger / sear / disconnector issue, or both? do the above, and we can re-visit with new set of parameters... best, til....lat'r....GT
