Pietta .44 cylinder without proof marks

[Mousegunguy]

Odd question,
I notice one of my five .44 nma pietta cylinders has no marks on it at all. The others all have a variation of this stamped on the cylinder…

I think it came as a spare cylinder with a CM date stamped gun
Was it not proofed?
whats the scoop?

 

[No second place]

I have 11 44 cal. Pietta NMA cylinders 2019-21 some proofed , some not. Some laser etched with a serial number some not. All CNC machined the same by my digital dial caliper. All are match accurate per my target test results...c

 

[necchi]

Those proof marks are only needed and valid in "Countries" that require them, and have been primarily used as a license fee/taxation base,, mostly European.
It's intent was to standardize production protocol within several small "cottage" companies
There are no "proof marks" on American made guns. We use SAMMI spec instead.
Presents of a proof-mark has never meant that the item was fired under duress to prove it, only that samples of the production have been presented for the test.

Now, flip the coin,
Just because a maker in Europe has license for proof marks,, doesn't mean the intended market for the item of that production run is for the European market,,
Thus,, no need to stamp it
Get where I'm going with this?

 

[Loyalist Dave]

There are no "proof marks" on American made guns. We use SAMMI spec instead.
Presents of a proof-mark has never meant that the item was fired under duress to prove it, only that samples of the production have been presented for the test.

So there are no SAAMI specification for black powder muzzleloading arms nor for cap-n-ball revolvers.

I'm sorry, but the presence of proof marks DOES mean that the item was fired under test conditions to proof it, or not. It is up to the individual proofing house.

Unlike modern ammunition where all of the proofing houses belonging to the CIP treaty agree on a single standard for the modern ammunition and proofing of such...., each proofing house has their own standard of how they will test a black powder non-cartridge firearm, and to what pressure that proofing will be done. So yes some proofing houses "batch" proof, testing one out of many firearms, or cylinders, and then the stamping is done, OR some require every firearm that is stamped with proof, to be so tested.

Either way, though, you have no way of knowing what has happened to the gun since the testing i.e. proofing was done.

LD