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Old February 23, 2021, 11:42 AM   #2
oldmanFCSA
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Join Date: November 8, 2010
Location: WISCONSIN
Posts: 254
The adjustment range within the scope may not be perfectly centered with relationship to the outside tube.

Some scope base/ring combinations allow for windage adjustment by using side screws on basses to center the internal adjustment capability without using the internal adjustment.

Those of us that shoot ELR (Extra Long Range) use scope bases with "cant" built in to permit centering of scope distance range without using most of the adjustment range. Such as a 15, 30, 55, etc. MOA base Cant. (Front of base is thinner to tip scope forward).

This supposedly allows for best strength of internals and the most capability of any future adjustment for range or windage.

YMMV.
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