Questions 1 through 9 remain "What is the wall thickness at the area of the bulges?" and without that information no one can provide rational advice Red...but we are likely to do so anyway wink

This "pimple" on the outside



Looked like this on the inside



and may have been caused by the pilot while reaming the barrels.

Possibly your nearest barrel expert?

Kirk Merrington
Kerrville, TX
http://www.kirkmerrington.net/
830-367-2937
Keith Hackleman (apprentice)
303-919-7376 cell

Dean Harris
Skeets Gun Shop
Tahlequah, OK
918- 456-4749