I agree with what you say concerning a rifle but the gun in question was a smoothbore percussion shotgun loaded with lead shot for clay shooting , What I was trying to point out when I started this thread was use the right wads for the job the over shot wad was thinner than 1/16 which was bypassed by the ramrod and left on the bore wall .When the gun was fired this wad opened up thus causing a obstruction which has the image shows and burst the barrel .Dutch Schoultz said:Back in the 70's there was much more conversation about burst barrels and the crippling and occasional death that resulted from such events,
I understood that The people producing Douglas Barrels discontinued because of all the litigation those events caused,
Long before I suggested wiping between shots so that each shot came from the ame sized barrel I had suggested the wipe to remove any build up of baked on residue which will always make it hard to reload followup hots because if that build up makes it hard to get a patched ball down the barrel, what would happen if that residue prevented the patched ball from getting out of the barrel. At best you will have a bulged spot in the bore of the rifle ruing itof at worst a burst barrel.
I believe if you wipe between shots for accuracy or between every other shot for safety there is NO WAY you will have a burst barrel
I think a burst barrel is the fault of the rifleman and rarely the fault of the manufacturer.
Dutch Schoultz
Feltwad