6.5x52 Carcano "SB 18"

What is “SB”?

It is the headstamp used by “Società Sigma” , a medium-size factory that made ammo and clips for the pirotecnico of Bologna.
SB stands for “Sigma Bologna”

16 , 17 and 18 dates are known

These cartridges and clips were packed in Pirotecnico di Bologna boxes and are not uncommon finds in WW1 trenches, mixed up with SMI, Bologna ( B- date) and Capua ( C- date) ammo and clips