doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com THAT was close

So in summary I think Bill is probably correct. The arrows point to a ring bulge



But I think William is correct also. Frequently the burst is a combination of factors. The image above is from an abused gun shot with Sellier & Bellot 1 1/4 oz. shells of unknown pressure (likely CIP max.) known to have squib loads, AND IMHO the wall thickness is suspect.

One can be confident as to the cause (IF the wall thicknesses are measured) if the barrel looks like this



What about this? Looks like a ring bulge?



Or not, and I doubt it the barrel left Parker Bros. with that wall thickness. Another time bomb damascus barrel for Harry



I will stand by my statement that long splits (in a shotgun barrel) are typically from thin walls; L.C. Smith Long Range. I don't know the pressure of the 3" Winchester Bismuth load but likely SAMMI max.



The frustrating problem, for those of us trying to learn something, is that images get posted of a "blow up" but no one seems willing to measure the wall thicknesses

Thanks to Randy I have contacted the seller of Flues. We'll see.