Winchester Super X-1 sticking open

If you're only shooting one shell, the bolt is supposed to stay open after the shot.

Dan

If you are talking about the follow up shot is not closing the bolt fully, then it will need a really good cleaning, gas system and all. What types and loads of shells have been using through it. It is possible that really light loads have enough recoil to eject the shell but not enough to drive the bolt enough to the rear to have enough energy to fully seat the bolt with a fresh shell in the chamber.

I have had 2 different problems with my Super X 1 sticking open:
1. the recoil spring follower (located in a tube at the rear of the receiver inside the stock) will sometimes stick in the rearward position in the tube, and thus fail to return the bolt to battery.
2. The firing pin retaining pin at the rear of the bolt failed and fell out, causing the bolt to jam in the open position.
With these two exceptions I have found the Super X 1 to be reliable and a pleasure to shoot.

You may need to install a new recoil buffer--it's a part that's press-fit into the inside of the receiver to prevent metal-on-metal contact between the bolt and the receiver. An old, original one by now would be way brittle and would soon disintigrate by just shooting it a few times. Once the buffer's gone, the action will "stick" open as you describe. It's important to have a buffer in place, otherwise shooting it will damage the receiver and a component intergal to the bolt, which is no longer available unless you buy a complete bolt assembly that runs a couple hundred dollars. ...also it may be a good idea to replace the closing spring (aka rebound spring) if it's still original. Wright Gunsmith is probably the best place to get parts for a super x 1, at least for the most durable buffer. Nuline is another good place. The Super X1 has a cult following...all milled still parts and they run forever.