I have encountered two headstamps on 9x19mm cases.
"W M A 12"
" (+) WMA 13"
I suspect this is the new military style headstamp used by Olin using the new Manufacturers Code (old Mil Std 1461 code) for Olin instead of the one they have been using on military ammunition which was WCC. I suspect WMA probably was requested by Olin because it is "Winchester Military Ammunition" or something similar.
Has anyone seen loaded ammunition with either of these headstamps on 9mm?
Is there any documentation that this is Olin production?
Are there any other headstamps using the WMA code?