Barrel Obstruction

I was taught that it depends where the obstruction is. If it is near the muzzle, the barrel will burst. If it is near the chamber, probably nothing will happen.

I have not run any tests, but I note that the video had obstructions near the chamber.
 
He did something similar with a shotgun. As Ganderite said the gun held up fine until the obstruction was placed farther from the chamber.
 
I can remember when the Ruger P-85 was first introduced, and Ruger submitted some for U.S military testing which was underway at that time and which, unfortunately for Ruger, ended with the Beretta's being adopted for service.
To demonstrate the strength of the P-85 design , Ruger techs turned a threaded steel plug to bore diameter, tapped a P-85 barrel to accept the plug and screwed it into the barrel. They also cut a section of the slide completely out below the ejection port, and then fired the pistol. No blow up, no grenading, no nothing.
They then screwed the plug back out, removed the stuck bullet and fired several full magazines through the pistol, with no problem.
On then stripping and closely examining it they found a slight bending of the slide where the piece had been removed, but the pistol was still fully functional.
They didn't however say how much or how little bullet jump the steel plug allowed on firing.
I imagine it was minimal and not much more than enough to allow the bullet to fully enter the bore, but it still made for pretty impressive advertising reading.
 
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