I strip my bolt after shooting. When reassembleing I always have trouble getting the firing pin to start screwing. I’m old and don’t have the strength to hold both ends of bolt at the same time to get the pin started in the nut. Yesterday I decided to try a new way to so with everything in place I placed a fired case in the back of the nut in the space available. Now holding the back of the bolt it’s easy to push the pin in to the nut to begin screwing it in to the nut. This procedure is hard for me to describe so I hope all will be able to understand what to do when beginning to the bolt assemble.