"copper/tin matrix in a M855/ss109 projectile"

I wonder if this was a projectile from the Swedish / Norwegian attempt at a "Green Bullet"... didn't they use a copper matrix bullet ? ( And promptly pulled it because of poisoning from the bullets copper matrix dust.... See.. Metal Fume Fever....Metal Fume Fever )

The Norwegians learned about the issues from the Copper Matrix they used and sold the surplus here, I still have a can of that "M855".

The Carl Gustav had 2 versions...and if I remember correctly... Ended up using the Mk 2 version.