Another question for the sages on the board on this topic:
I'm trying to pin down the type and age of steel in a FN Sidelock I recently picked up. The underside of the barrels are "acier special a haute resistance" - which I take to be Cockerill special steel circa 1909 and thereafter. Does anyone know if that is correct - was acier special the same as acier special a haute resistance? I'm googling around in spirals on this one. On a slightly divergent note the gun is SN 179 and originally 2 3/4 with chopper lump (demi-bloc) barrels. I've yet to find SN data so I'm not sure of the date of manufacture but guessed in the 1920s.
thanks
Jeremy
