Case Neck Turning Jig

Our case neck turning jig is designed for use in a standard manual lathe. It has changeable collets that are reamed with chamber finishing reamers to fit the case shape perfectly which allows the bullet case to be held very true and concentric as if it was located in the rifle chamber. The case base is not used to locate the shell at all as it plays no part in locating the case in the rifle chamber. The collet is held into the jig by a knurled nut which is hand tightened only.

Neck turning can be carried out internally, externally or both to give you a case neck that is perfectly true to the tapered outside body of your cartridges, allowing very concentric location of the projectile in your rifle chamber. Cases should be resized and then neck expanded to a common dimension before case neck turning.

The jig is manufactured from 416 stainless steel and machined in one operation, guaranteeing concentricity of the jig body and the internal tapered surface that locates the removable collets.

Collets are available in a range of common target shooting calibres and custom collets can be manufactured on request.

The case to be turned is pushed into the collet through the large, machined opening in the jig body and the friction between the case and the collet is sufficient to hold the case as the neck is being machined. Once machining is completed, a light tap with a nylon block or similar item will drop the case out of the collet and back out of the jig.