I'm not entirely agreeing that the only option for claw mounts, are straight tubes.
It is correct that claw mounts need a mounting as far as possible forward, in order to tilt away, but this can be accomplished with the smaller ocular bell's as well.
Below is not a drilling obviously, but as you can see from the mounting, it would be very difficult to mount a scope much lower. With a Swarovski Z6i 1.7-10x42. In fact, I already run into the issue that the bolt handle barely clears the rubber tab on the scope ring. This is something Swarovski should change in their models. Either have no tab extruding from the rear bell. Or have the tab on the other side and you twist it in the opposite direction to increase magnification. At the lowest magnification, there should be nothing to impede the manipulation of the bolt handle.
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