The 118.35 is the "Gauge" of the rifles bore, which means it will accept a plg gage of .340" diameter, but not one of .350". Probability of its being a 9.3x75R caliber is quite high, though not a given. It would need a bore cast to determine for sure. If you take off the bbls there should be more marks on them which are hidden with gun assembled.


Miller/TN
I Didn't Say Everything I Said, Yogi Berra