NZ M1 Carbine Collectors Group

Discussion board for collectors of WW2 M1 Carbines
 
HomeHome  FAQFAQ  SearchSearch  RegisterRegister  MemberlistMemberlist  UsergroupsUsergroups  Log in  

Share | 
 

 Brit Proofs.

View previous topic View next topic Go down 
AuthorMessage
Mikey 51
Staff Sergeant
Staff Sergeant


Posts : 76
Join date : 2007-08-15
Location : Wellington NZ

PostSubject: Brit Proofs.   Sat Aug 25, 2007 2:46 am

Does any one have a Carbine with Brit Proofs ? Found on the barrel, receiver and bolt. I have two but am researching the subject so any info at all will be appreciated. Thanks, Mike

Back to top Go down
View user profile
billyvan
Admin
avatar

Posts : 96
Join date : 2007-08-15
Age : 46
Location : Christchurch New Zealand

PostSubject: Re: Brit Proofs.   Sat Aug 25, 2007 8:03 am

Even though you already know about mine Mike, I will get the ball rolling with replys.

Here is one of the ones in my family



and on it are these markings.



Its another Saginaw SG, 5848xxx

I'm keen to see any others bounce
Back to top Go down
View user profile
Mikey 51
Staff Sergeant
Staff Sergeant


Posts : 76
Join date : 2007-08-15
Location : Wellington NZ

PostSubject: Brit Proofs.   Mon Aug 27, 2007 7:26 am

Jester and Alex. I really need to find out quick what 3640 BAR means. Do you think anyone on IMAS would know ?. Here's a pic of both of mine together. NP means Nitro Proof House and BNP means Birmingham Nitro Proof House. The two houses merged together as a result of the Proof House Act, about 1955. See the change from TONS to this 3640 BAR stuff. I think it maybe something to do with barrel pressure and a move from Imperial to Metric. Any help appreciated. Thanks, Mike.


Back to top Go down
View user profile
billyvan
Admin
avatar

Posts : 96
Join date : 2007-08-15
Age : 46
Location : Christchurch New Zealand

PostSubject: Re: Brit Proofs.   Mon Aug 27, 2007 9:15 pm

Hi Mike, here is some helpful info, kindly supplied by my awesome fiance/research expert.

http://www.basc.org.uk/media/100_proof.pdf

This is an important piece of the info in the link, as it explains why conversions to prove the association between the two figures don't work.

In 1989, all proof data was marked in metric using the bar as the unit of measurement. the use of kilograms per square centimeter was dropped. Under this system, 850 bar represented standard proof, with 1200 bar being special or magnum. While it is possible to use mathematical factor to convert one pressure unit to another, this conversion is only valid if the two sets of values have been arrived at using the same pressure measuring system. For example, the 1954 Rules of Proof use the Lead Crusher Radial system. This measured pressure units in units of tons per square inch.

Hope this helps.

Alex

_________________
I'M a CARBINEAHOLIC!
Back to top Go down
View user profile
Millse
Newbie
Newbie


Posts : 4
Join date : 2008-04-19

PostSubject: Winchester M1   Sun Nov 02, 2008 6:56 am

[img][/img][img][/img][img][/img][img][/img][img][/img]



A few marking on a Winchester M1, I think it was refurbished Sad during korea but never issued.
Back to top Go down
View user profile
billyvan
Admin
avatar

Posts : 96
Join date : 2007-08-15
Age : 46
Location : Christchurch New Zealand

PostSubject: Re: Brit Proofs.   Sun Nov 02, 2008 7:23 am

Some nice photos, do you have any history on how your Carbine came to be in NZ?
It's an intriguing part of the research we are doing, trying to find how all these Brut Proofed marked Carbines came to be in NZ.

_________________
I'M a CARBINEAHOLIC!
Back to top Go down
View user profile
Sponsored content




PostSubject: Re: Brit Proofs.   

Back to top Go down
 
Brit Proofs.
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» The Brit is Back .....
» naruhina proof
» BAOBAB BONSAI- FEASIBLE STYLE?
» continuing proofs America is wacko
» Brit List: The "Ultimate" DW Lists of Lists

Permissions in this forum:You cannot reply to topics in this forum
NZ M1 Carbine Collectors Group :: Markings and Stamps :: Metalwork Markings-
Jump to: