Today I will be purchasing this rifle for 100$, I've done a fair bit of research on it but the one area I've had trouble with is the bore sizing and what I should chamber in it. Overall just some suggestions on anything would be super helpful!

I'm new to this old of firearms collecting as I normally stick to classic mil-surp firearms from the cold war, I currently have a P01, Makarov, SKS, Mosin, CZ82, PM-63 and a few other entry level collector firearms.

Thank you again for any assistance, after I purchase it ill post some better photos than the ones I was sent. Even if its hard to chamber or not safe to do so without making the rounds myself 100$ for a antique wall hanger cant hurt.

Edit: Buying from a friend so not a sketchy price as would be assumed!
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