A shim is a very precise, thin wafer of brass used to raise or lower a scope suffering from enormous elevation adjustment problems. If your scope is having problems—such as requi-ing 10 MOAs from the mechanical center to reach boresight—you may have consumed so many MOAs that you cannot later adjust the scope for dead-on aiming during long-range firing.

By inserting a shim between the rear scope base and receiver, you can raise the point of impact and greatly increase "up" MOAs. A shim placed beneath the front base will lower point of impact and increase the "down" MOAs. These shim widths and resulting MOA changes are:

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Hunting Mastery Selected Tips

Hunting Mastery Selected Tips

Deer hunting is an interesting thing that reminds you of those golden old ages of 19th centuries, where a handsome hunk well equipped with all hunting material rides on horse searching for his target animal either for the purpose of displaying his masculine powers or for enticing and wooing his lady love.

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