At one time in my Farquharson rifle's life it had a different barrel and also it appears it had a scope. The forearm has a section cut out which appears to be very similar to a G&H side mount. I have been contemplating what to do with this, should I make a new mount or piece in a section of wood.
To the first point I thought maybe see if I could design the mount and then make a try prototype. As I own a couple of 3D printers for my camera products company designing in CAD and then printing the results seemed to be worth a small investment of time. It the results looks good then all I have to do is machine the mount from steel.
Below is a series of pictures. Let me know what you think. (Green material was in the printer already so that is why the mount is green):
Please note that in the last picture the G&H mount and rings are off another rifle I have and in actual application I would use a different set that has the correct height for this rifle.