Barrel wall thickness

[Dean Romig]

Originally Posted by jay shachter

Hello Guys,

Unless you are shooting guns with obstructions in the barrels, there is no measurable risk shooting reasonable loads in guns with 20 thou wall thickness at least 15" from the muzzle, provided all other issues are sound, like tight ribs, no serious dents, etc. This is not opinion, but data collected for decades under controlled testing.

From the muzzle Jay or did you mean from the breech?

Thanks for the very knowledgable post. Information like yours is very valuable for everyone who shoots these old doubles.

Was the curve you are referring to printed in Parker Pages or on the forum here someplace?

Dean

[Drew Hause]

This? By DuPont in the mid-30s

[Bill Murphy]

I believe that Sherman Bell may have done the "inch by inch" pressure graph for black and smokeless loads. I don't know which one of his articles may have included this information.