We have two situations with the Fox failure that are notable. Situation #1: "I'm sure all the shells were OK." Situation #2: I don't think were going to get any more information on the casehardening person, who is "local and advertises nationally". Not to be sarcastic about the unfortunate shooter/Fox owner, but we are being told nothing about the two situations that are most important to the gathering of information. In short, measure the powder and give up the name of the gunsmith.