David,
While I don't have definitive evidence, the Chromox Fox barrels are likely not a 10xx series but rather I believe they are a 4xxx series or something close. Tensile will vary, but the elongation is going to be 'in the neck of the woods' and this bulged barrel is way down in the elongation 'woods'. In the example above, there's about a 10% increase in yield strength from the elongation of 3%.

Things you and millions of others rely on daily for your safety are made from cold formed steels. Most people don't realize this.

While an Xray may reveal inclusions and some flaws, it's really difficult to see much. If there was a flaw like an inclusion, it wouldn't have bulged in a ring.

Last edited by Chuck H; 01/28/13 07:34 PM.