Just a question to anyone. When you buy a Milsurp, how do you know if it's safe to shoot?

I don't want the barrel exploding on me or something.

I have a 1944 Long Branch Lee No 4 Mk I that someone gave to me. I had to give it a good cleaning. The bore looks pretty good, but I'm no expert.

Also bought a Russianicon M44 Mosin Nagant recently that I want to try.

Please help with your thoughts on how to check that the firearm is safe to shoot.

Thanks in advance.
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.