Worn out No4 Mk1 bitsa - magazine platform adjustment

[Peter Laidler]

You can check the straightness of the striker by rolling it on a surface plate or sheet of glass. We'd roll them on the alignment sheet (a sheet of glass used to align the barrel and body). You can straighten them but only in a lathe chuck. It's only the cocking piece end that gets bent.

There's no allowable angles of sloppiness or any sloppiness for the bolt. The striker MUST be straight or it causes all sorts of problems and it MUST be tight on the cocking piece. If it is loose in the cocking piece you can distort the threads to tighten it up but this is a but of a bodge in my opinion. Mind you, so is my idea that was well used among other Armourers. That of cleaning the threads out and dipping the thread into some melted solder. But it did the job effectively. I wrote a piece about the mechanics of just setting up a bolt once. Just that is fairly complicated because everything in the bolt affects or is related to something else. Maybe someone can bring it up and when you're bored rigid, you can become even MORE bored rigid by reading it!

On the bright side, it would appear that your rifle would be a good example of where we'd use the Gauge, inspectors, dummy bolt that thunderbox showed in a recent thread

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.

[jss]

Just that is fairly complicated because everything in the bolt affects or is related to something else. Maybe someone can bring it up and when you're bored rigid, you can become even MORE bored rigid by reading it!

Thanks Peter and tbone, and my apologies for not checking the archives first. It looks as though my queries have been covered in full detail by your excellent articles Peter. Thanks. Collectivley they would make a very nice printed publication. Yes, very complicated but fascinating and not boring. Taking up far too much of my time though!.
Now I just need a big workshop, a lot of special tools and about 20 years.

jss