doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Proof failures

Rocketman,
I think you have covered most of the bases there!
You can lead a horse to water, but you can't make it drink!
I am sure in the fullness of time this issue will be resolved. Will we ever be told the cause?
I doubt it.
In the procedure, there appears to be only one variable since this issue arose, perhaps they should look hard and long there.

Dig, This problem first surfaced on this forum in 2008 [see crossed chissels post 22-04-08.] At That time we were awaiting your respose to the many posts relating to this same issue.Now almost 3 years later you report an expensive failure on one of your own guns. The proof authorites have had adequate time to determine the root cause of these failures. I would have thought by now that the British gun trade would be demanding answers from the proof authorities.Comments please?

I can't see the English proof house being at fault....I'm sure this wasn't their first rodeo.

I'd be interested in hearing the wall thicknesses where the blow is occurring....sounds like it could be too much honing.

HomelessiOe,I did not intend to imply that the Proof houses are at fault.It is not unreasonable to expect that the Proof houses would seek to absolve them selves from responsibility for failures due to inappropriate test proceedures.This issue begs a response from the London and Birmingham Proof Masters and the Guardians of proof.[Majority of the later being members of the gun trade.]
If there was a defect in any gun that failed at proof; dimensional,material or in the manufacturing process, the Proof house did its job in protecting the end user from an unsafe weapon.
I think we would all rest easier with the knowledge that the Proof Houses have been absolved from any responsibility in the failures reported.

You get that close to the muzzle, wall thickness should be pretty much academic. Were that not the case, ported barrels would be blowing at the muzzle, right and left.

I think we have rightly honed in on the questions. Now, we need to hear if any of the jabs have drawn a response from either Proof House...

Roy Hebbes,
I cannot find the crossed chisels post dated 22-04-08.If my memory serves me correctly the earlier failures were different to these.Please advise /enlighten.

Try this link salopian, lads.

http://www.doublegunshop.com/forums/ubbt...92320#Post92320

Thanks Birdog,
Re-read the lot, it doesn't make very good reading.
Unfortunately I have never seen an official statement, and it seemed to have died a natural death until recently of course.

I thought OWD's question really interesting, because truth be told, I NEVER thought about/read about/encountered shot being used in proofing a shotgun.

Rocketman, in a way, answered this question by mentioning the use of shot in the fouth point of his "Proofhouse Treatise".

Now, of course, thinking of proof marks on my OWN guns, for God's sake, I feel the fool; 1 oz, 1 1/8 oz etc. My eyes always went for the pressure and shell size. How in the world did I think they arrived at the amount of shot for the gun to be limited to?

So now I must add my voice to the masses and chime in, what size shot do they use and is it only one size; Is there a correlation to bore size, i.e. 10 bore gets size X shot, 12 bore gets size Y shot, etc.?

I've wiped the scraps of ignorance from my eyes and I now see a door blown off its hinges.