I would like to have everything and a borescope is one of those things. A friend has one and I am going to get to check it out soon.

I do have a Wally Siebert bore scope. This is a $20 item that checks out the throat. It's invaluable when looking at used guns as it gives a quick check of the throat. It's just a brass tube with a lense in one end. It magnifies the chamber and throat with a spectacular view.

I got it from Sinclair about twenty years ago. They don't have them any more. I "borrowed" mine back from the friend that has the "real" borescope.

The Wally Siebert scope is something that everyone could afford and use. But nobody knows about them. Wally Siebert is/was? a mfg of eyepieces for Fecker and other target scopes. This item only works in bolt or SS rifles. It's the size of a bolt.