Wednesday, 24 October 2018

Fit To Go Pop - SAAMI (ANSI-SAAMI) & CIP:

When reading a 1999 review of the Krausewerk "BABY LUGERS" 3 inch .32" acp I perked-up when reading that these guns wouldn't cycle properly with current US made ammunition .. because they were designed to use 'pre-war' spec full power stuff. Link:
 http://krausewerk.net/32-acp-baby-luger/

Look - I couldn't Find An Image Of A .32 Caliber Baby Luger
 - So This Will Suffice.
(Shame it's not in color eh)
(I don't think that it's a 'Lady-Boy' But ..)

This situation goes some way to explain why 'thirtytwos' are so often denigrated by US hack writers - while Europeans successfully worked-out years ago that small bullets will kill just as well as large - provided that you hit the target.

In America - due to climatic/commercial conditions - you are likely MORE dead if killed by a forty-five .. or, even if totally missed .. at least your hearing will be damaged.

"Some comparison of the ".32 Automatic" as defined by SAAMI and the "7.65 Browning" as defined by CIP may be useful. ...  the maximum average pressure - as measured by a transducer on the test barrel - is 20,500 psi (1,410 bar) according to SAAMI, while CIP allows up to 1,600 bar (23,000 psi). This may explain why the cartridges from European manufacturers tend to chronograph at higher muzzle velocities compared to those from American manufacturers."

- That's from Wikipedia but it made me suspicious about the organizations quoted:

SAAMI specifications should properly be addressed thus: ANSI-SAAMI 

AMERICAN NATIONAL STANDARDS INSTITUTE - SPORTING ARMS AND AMMUNITION MANUFACTURERS' INSTITUTE.

ANSI is a US privately owned group that promotes voluntary standards
 & SAAMI is a business association not overseen by government - with standards that only it's members comply with.
7.65 Browning / 32 ACP Semi-Rimmed Cartridge.

- Whereas CIPCommission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives ('Permanent International Commission for the Proof of Small Arms')  - is an international organization of some 14 National Governments.

.. So the International Government organisation reckons that 23,000 psi is safe for .32" ACP but the US manufacturers owners group thinks that only 20,500 psi better matches US manufactured .32" caliber firearms.

Who am I to question their insider knowledge?

Note: It seems likely/possible that the 7.65 mm Browning and the .32" ACP cartridges historically were separately developed around 1900 and merged as interchangeable later. - John Moses Browning being involved in the basic concept and design of both.

- This would likely go some way to explain the different specifications .. Read this useful  & very detailed linked page:

https://forum.cartridgecollectors.org/t/more-info-on-32-acp-7-65mm-ammo/3601

Marty K.
After researching & writing 1,036 blogs I've got something NEW to try .. I've signed-up to Patreon. - In over five years I've not made one cent from this .. NOW you can send me a wee support $ - starting from $1. to get all this stuff from New Zealand - over a year that's nearly the price of one Shooting magazine. - Am I worth it?

https://www.patreon.com/user?u=16618870

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