Safe Wall Thickness

[B. Dudley]

I always check thickness at front of chambers. At the forend loop. And look for minimum overall in the front part of the tubes. At the very least.

If I am checking and documenting in detail, I check every 4" at top, bottom and side of each tube.

I thought I recall British proof info to be .018" for minimum. ?

I like to see numbers of at least around .025" minimum in the from half. Around .050" to .060" at the forend loop, and I find that most sound barrels run .090" to .100" in front of the forcing cones. These numbers are just ranges that I have found from measuring and firing different barrel sets.