Regarding the firing of a 12 ga cartridge with a 20ga cartridge up ahead of it, I decided to blow up a 12 ga Noble pump gun a neighbour donated for me to use as a Hunter Safety Course gun. I had explained during my courses that the 20 ga would fall far enough to jam in the barrel allowing a 12 ga to be chambered.
I tied the Noble to a round bale (I live on a farm)pushed a 20 ga cartridge in the chamber and followed it with a factory WW AA Trap load. Tied a long piece of string to the trigger, hid behind a grain bin and yanked the string.
A sort of muffled thump was heard and when I walked up to the gun, it was apparently unharmed. I repeatd this 3 times and could not burst the barrel, although the action had stretched and the bolt was loose in the gun. I wondered if the 20 ga cartridge was not fired, but was blown out by air pressure. This was in long grass and I could not find the 20 ga ones.
So I'm looking for a donated JABC which will blow for sure
Mike
