Mike,

No way to tell until they are ground.



After this they were bored. Finally, they used sulfuric acid to tell the patterns and match the barrels.

Peter Dyson is a great guy. I would have some concerns about using these in a gun I was going to shoot. From what Peter told me, they sat outside for nearly 50 years. However, Peter did tell me that some have used them in working guns, so the choice is up to the user.

Notice use of high tech OSHA approved safety shoes!

Pete