I read the lastest issue and about the accident at the quigley match with a cast ballard in 40-65.I would like to point out the editor has it a little wrong.iT was not the Ballard action that failed, it was the RELINE job that blew and casused the action to fracture.I have seen several reline jobs that were not good for a .22rimfire, let alone a 40-65.One was a 25-20SS, the other was a .32wcf, both bulged resulting in ruined barrels.Also myfather had a #4 Ballard relined in 38-55 with less than perfect results.It was sent to a 
company in Texas-the first time it we got it it was seen that a person had pounded on the muzzle with a large hammer to get it in, it was returned, the next time it looked OK.However,it would not chamber a shell.IT HAD NOT BEEN CHAMBERED.So i took it to a relible gunsmith and he chambered it.And i shot it for years.I know of only two gunsmiths i would trust with a reline job, i will not  say who they are.The moral of this story is BEWARE of BAD GUNSMITHING. it can bite you in the ass.

Food for thought...

So lets say that, for whatever reason,there was a pretty good "air" gap between the outside wall of the liner and the inside wall of the drilled out barrel. Maybe it was filled with loctite or epoxy, or maybe there were some air pockets in places after the adhesive was used. 

Anyone know what the yield strength of those two adhesive materials happen to be in a radial or shear direction?  Do they act like a Bingham plastic, compressing first and then deforming, allowing the liner to expand into any air gap before the liner then contacts the inner wall of the drilled out barrel?

Forgot to add:  We know that some compounds have a shelf life, but anyone know if they have a "Service" life as well, meaning they need to be renewed or replaced after a certain amount of time has elapsed. Anyone ever noted some old bedding compounds going bad?