As suggested by others, reference should be made to volume 3 of the Modern Shotgun,"The gun and cartridge", chapter 16 Bursts!.In this chapter Burrard reviews steel strength, yield versus ultimate strength,together with comments on performance applicable to Damascus. Formulae relating to barrel design/strength are also given. The effects of wave pressure caused by barrel obstructions are reviewed in detail. Perhaps a person interested in this issue with a degree in mathematics/physics could comment on the impact of wave pressure on the barrel failure as seen in the samples under review.

Last edited by Roy Hebbes; 05/15/14 04:51 PM.
Roy Hebbes