Harry Bonar and dfariswheel, the bore is in fact not ok. It's pretty corroded and rusted out, but I'm try to get it cleaned up. Made some progress but it will just take time.
The problem now is that I cannot get the bolt back into the gun.
As you see in the fourth picture from the top, first post, the sear position.
Now the second post, third picture from the top. Upon trying to tinker with the bolt, I tried depressing the pin shown on the outside of the first post, fourth picture. It triggered something in the bolt and now I cannot get the bolt back in, as that pin is in a different place now, (fourth picture, second post).