ID 20x139 round


I have a 20x139 HS820 cartridge that I believe was manufactured by Rheinmetall GmbH, and I’m a bit confused by the projectile color code. It has a blue projectile with an approximately 5mm-wide black band just above the driving band. What does the black band signify?

The projectile markings are in white:
RH- 01 -X

The headstamp is:
20x139 DM 141 LOS RH-2- 28 -X

I can post a photo later if that would help.


This is a factory internal marking. Almost impossible to find out today. Quite some of these cartridges have shown up from Rheinmetall in the 1990’s.


Thanks EOD!