It will depend on which SK scope ring you are using. Lapping scope rings is effective only when the ring is not removed after the lap job or before installing the scope. As I recall, the V1B model scope rings have to be removed to install the scope, thus disturbing the perfect ring-to-ring alignment achieved by lapping.
The other SK scope ring models are horizontal split-ring style rings, and thus the scope can be mounted without removing the base ring.
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