PUBLIC Forums => Public Forums => Headstamp Submissions => Topic started by: JAndrews on June 10, 2009, 07:15:40 PM

Title: Identical headstamps on different casings
Post by: JAndrews on June 10, 2009, 07:15:40 PM

I have two very different rounds with the same headstamp.  Has anyone ever seen this before.  Both rounds are stamped LC 43.  One round is a rifle caliber with the following dimensions...

OA Length - 3.331 Inches
Case Length - 2.48 Inches
Case Diameter - .462
Primer - .218

The other has the following dimension, (possible pistol round)...

OA Length - 1.688 Inches
Case Length - 1.294 Inches
Case Diameter - .352 Inches
Primer - .159

Jim

Title: Re: Identical headstamps on different casings
Post by: Justine Kreso on June 11, 2009, 06:37:15 AM

Yes...the LC is likely just the plant it was made or who marketed it.  Off the top of my head I can think of Lake City, Chinese, and I *believe* Hungary that used LC.  The 43 is likely the year it was made.  So it's very possible that you have two different calibers pumped out of the same plant in the same year.  Do you have photos of the headstamps?  There also might be very slight differences that you aren't noticing.

Title: Re: Identical headstamps on different casings
Post by: Tori Kujala on June 11, 2009, 09:51:27 AM

Jim, that is why we call Justine "The Problem Solver".    >:D

Title: Re: Identical headstamps on different casings
Post by: JAndrews on June 11, 2009, 05:26:20 PM

Justine,

Here is a picture of the two headstamps side by side.  My untrained eyes don't see anything different except for the primer color and possible size.  Let me know if you need anything else.

Jim

Title: Re: Identical headstamps on different casings
Post by: afss on June 17, 2009, 01:28:35 PM

In China and many East-Europian countries, the number mark, in many cases, the number of the factory were the ammunition was made.

Title: Re: Identical headstamps on different casings
Post by: DocAV on July 14, 2010, 10:48:38 PM

US Military, Lake City Army Ammunition Plant, Independance Missouri, USA.

First example: Cal .30 M2 , 1943 manufacture. Primer diameter .210", ring crimped in place. Bullet 150-152 grains (  Ball)
Second example:  Cal.30 carbine, M1, 1943 manufacture, primer diameter .175", ring crimped in place, Bullet 110 grains round nose.

Trying to measure a primer diameter from a crimped in example will always lead to incorrect estimations of diameter.
photos are the best assitance to identification, accompanied by OAL, CarTridge case length, Bullet diameter at Mouth of case, head diameter just before extractor groove or rim, and Rim diameter (in rimmed case), and colour codes on Bullet tip, and in some cases, primer seals.
US primer colours have NO significance in ID. ( they are just a sign of different production lines in a massive plant such as LC.)

Whereas, primer seal colours are specific for ID of British made Small arms ammo.


Regards,
Doc AV