This is the headstamp of what I think is a 6.5 x 55 dummy. Nickle plated case, 2 rolled grooves/crimps mid-body, light green anodized aluminum projectile(appears to be lathe turned). It was in a box of ‘stuff’. not really my interest, but would like to know if I am correct in the ID.
You are right, it’s a swedish 6.5x55 dummy. The designation is ‘m/41’. Yours with the green bullet is the last version for swedish Mauser rifles, of what I know.
6 9 is 1969
027 is Norma Projektilfabrik, Åmotfors