Trying to Identify Origin of a 1911 Barrel

[USMA79]

I have what I believe to be a barrel for a 1911-type pistol. I have attached photos of the barrel and proofmarks on it. There appears to be one or more words below the proofmarks, but I cannot read what it says. The only other markings are a P on one barrel lug and an F on the other. (You can see the F in the photo of the proofmarks.) The specific type of ammunition for which it is chambered is not marked, but a .45 ACP round seems to chamber properly. The barrel appears to be blued, but it is a very dark finish. Can anyone identify the origin of this barrel? Is it likely chambered for .45 ACP? Thank you in advance.

USMA79

[browningautorifle]

The script says "Not English Made(Make?)"...typical of ordnance that was LL to the UK. Probably .45 ACP unless it's .455?

[USMA79]

Thank you. I think you've broken the code on the lettering on the barrel. I'll check with a local gunsmith -- I assume he'll be able to let me know whether the barrel is chambered for .45 ACP or .455 Webley Auto.

USMA79

[browningautorifle]

All he needs is both cartridges, they you two slide them in a see what chambers correctly. There are guys here that would know if a .455 barrel would be marked as such...don't know where they are though.

[Garandy]

Sounds like it could be a Flannery barrel that was installed in a M1911/M1911A1 that passed through an English proof house.

[USMA79]

Thanks very much. After reading your note I looked at photos on some other websites. The markings on the barrel lugs definitely look like those on barrels manufactured by Flannery Bolt Company.

USMA79