Originally Posted By: KDGJ
Bob,

1370 is the weight of the barrels in Kg (a little more than 3 lbs).
Ken


Agree with Ken. 1370 kg would be the weight, not the pressure. I don't believe any Italian shotguns made in 1951 were proofed to such high pressure. The proof pressure would be indicated by a star in a circle (or maybe a crown--the mark changed to the former in 1950) with "PSF" underneath it. There was no mark for higher proof pressures (2 stars in circles with PSF) until 1962.