One more thing to consider….is your top lever spring strong? It’s it’s weak and is starting to have a little spring back…then that should be looked into.
If it’s strong, and the gun still snaps close with authority, then yes, you probably have some bolt work to do. If you can smoke it in and see where is not “biting” that’ll give you a good idea on how much material will need to be added. It won’t be much. Adding some material to the bolt locking surfaces via tig or laser welding and then refitting should give you plenty of bite.
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