I'm not so sure of how you could prove this statement either... assuming the "increase pressure" you cite is something radically greater than normal chamber pressures. I don't see how anyone could predict the result when a shell is suddenly unsupported by a large portion of rim cut and chamber wall at the moment of near peak pressure. How can you assure us that the rear portion of the brass remained perfectly flat against the breech face, and that there was no violent flexing of the largely unsupported shell head, which may have flattened the rim and permitted the primer to balloon outward? I also don't see how anyone could accurately reproduce the event to confirm this result.
You can cry, or whine, or complain about my opinion here, but I think we all know where you were coming from with your last paragraph in your post above, and your X-Ray Glasses advertisement.
It's all his silly speculation....
Dr. Drew is looking to blame anything but the 100 plus year old gun.
