Thread: Scope advice

Originally Posted by CamFlatt

Thanks. Sorry but new to hunting. What's the purpose of lapping the rings? Lapping is taking some material off the inside correct?
It looks to me like a 1" tube has been crimped by the 25mm rings. Guess that 0.4 mm does make a difference.

Yes lapping will take a very small amount of material off and it ensures that the surface area on the rings is all the same. So when the rings are tightened it contacts evenly with the scope so there is no pinching or uneven pressure on the scope tube which can sometimes cause issues.

Rings will be marketed as 1inch or 25mm, they are one in the same.