Hello Dave,
Sorry to butt in but I'd like to share with you my experience with claw mounts (Suhler Einhakmontage or SEM):
I have a Simson 12 bore with said mounts and a 4x32 scope that I wanted to change for a 1,5/6x36. In my infinite ignorance, I got the "new" scope and a couple of sets of claws second hand and in perfect working order. When I had all the components I came to realize that nothing matched anything. The "new" claws had nothing to do with the mount on my gun. To make a not so long story short, I had to get the old claws off of the 4x32 scope and adapt them to the 1,5/6 scope.
All this to justify what you mention: "...it is not an economy job and does take a while...".It is now clear to me me that these type of mounts are completely customized to each gun. They are extremely practical to use though and are fully justified. At least my SEM is. You take the scope off and put in back on in a jiffy.
Best
JC
