Headstamp ?

[Jonny2guns]

Preping some 30-06 brass I bought a few years ago and noticed headstamps I've never seen before. SL 42 and DM 42. Are these from 1942?

 

[CQB45ACP]

Preping some 30-06 brass I bought a few years ago and noticed headstamps I've never seen before. SL 42 and DM 42. Are these from 1942?View attachment 1203483

Here are two possibilities for the DM--

Deutsche Waffen-u. Munitionsfabriken A.-G., , Früher Lorenz , Karlsruhe, Germany

Des Moines Ordnance Plant, Des Moines, Iowa

Try these websites for help

Headstamp Codes – International Ammunition Association

cartridgecollectors.org

AFTE

afte.org

 

[FLIGHT762]

Your brass is US manufacture WWII M2 30/06 brass. The two numbers denotes manufacture date. "DM" is Des Moines ammunition plant and "SL" is the St. Louis plant.

These two ammunition plants operated only during WWII. The original ammunition had chlorate (corrosive) primers.

I've reloaded this type of brass for many years. The primer pocket crimp will need to be removed before re-priming.

A list of U S Military head stamps can be found here if you find any others you don't recognize : https://en.wikipedia.org/wiki/List_of_military_headstamps

 

[Jonny2guns]

Your brass is US manufacture WWII M2 30/06 brass. The two numbers denotes manufacture date. "DM" is Des Moines ammunition plant and "SL" is the St. Louis plant.

These two ammunition plants operated only during WWII. The original ammunition had chlorate (corrosive) primers.

I've reloaded this type of brass for many years. The primer pocket crimp will need to be removed before re-priming.

A list of U S Military head stamps can be found here if you find any others you don't recognize : https://en.wikipedia.org/wiki/List_of_military_headstamps

Thank you