Herkulesdrilling,
The 118/35 is the bore diameter(not groove diameter nor bullet diameter)expressed in guage measurement(like shotguns).In my experience, this marking most ofter is found on rifles with about .358-.359"groove diameter.The "express" type bullet as used in 9,3x72R Norm.is made to be safe in these smaller barrels.
L3
To install the bushed firing pin, the one on the hammer will be cut off,a hole will be drilled/tapped into the breechface, and a bushing will be screwed in with the new firing pin trapped between it and the action.It's a little more involved, but this is a simple explanation.BTW what is the groove diameter of the barrels? 118/35 would not be expected on a 9.3x74R(unless rechambered from 9.3x72R or 9x58 1/2R,etc).
Mike
