Since you are new at this. Here’s my thoughts on this gun. You’re going to probably get away with what you have as long as you are shooting the low pressure stuff. But, if you ever shoot high velocity shells you are probably going to see some issues crop up quickly. I’ve seen high velocity shells “pop” the rim because there was to much of an unsupported area around the rim, something like you have. Like someone else said, a high velocity 22LR can be up in the 25000 psi range. The other issue I see, (and maybe this is an illusion because of the photography) the head space is messed up. It appears the liner is hanging out behind the original barrel breech face. If this is the case, and the original head space was correct, then you are crushing the breech block against the thin edge of the liner shell head clearance cut. I’m guessing you don’t have a lathe? But, in my opinion, in order to make this “right” and “safe”, you need to do one of two things. One, do like John Taylor said and install a new chamber liner. Leaving slightly long so the proper head space can be obtained. Or, set the barrel back, adjusting for the proper head space, recut the extractor and rechamber. This solution will create other required fixes, like the take down screw and forearm retaining screw. Either of these will require a lathe. With a 22LR, as long is the chamber, barrel breech face, extractor, breech block face and head space are all correct, the age of the gun will make no difference and I would not be afraid to shoot the gun. Bob
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