What Hawk said but you can get a wall thickness gauge like I use for $200.

By reading the hyroglyphs on the barrel flats you can sometimes tell what bore diameter range was when the barrels left the factory. And by comparing them to their current bore diameter you may find they are original diameter. That is why I asked what gun they were from.

Of course the American made guns do not have this information stamped on their barrels.

Best,

Mike

Last edited by AmarilloMike; 12/31/11 12:21 PM.

I am glad to be here.