Proof failure rate?

[Mauser720]

nukem556 -

I was not able to find that specific statement by John Walter which you referenced; however, I do know that failing to meet the proof test firing involves a lot more than just the pistol blowing up.

It can also fail the test for such things as excessive head space, damage to the cartridge brass such as evidence of cracks, splits, etc.; failure to extract because the chamber held onto the spent brass, etc., etc.

These pistols could actually fail the military's proof test, and still be given a "P" prefix and sold on the commercial/civilian market.

But 40% of the Mauser pistols failing the proof test does sound very questionable and doubtful.