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Leupold's scopes have been much like many others; some are good, others less so.
Some years ago, the US Olympic Rifle Team's manager asked me to put some Leupold scopes on my collimator to check their zero holding abilities when the power was zoomed throughout its range. All three had about a 1/3 to 2/3 MOA figure 8 loops their reticule made around the collimator's reference reticule. This is a mechanical fit slop with the erector tube's lens barrels in the zoom camming mechanics moving them back and forth as the power's changed.
Then those scopes were tested for reticule repeatability from recoil. One had less than 1/8 MOA slop but the other two had about 1/3 MOA. The shock of recoil made their ajdustments bounce around and not go back to the same position after each smack of a rubber mallet on the collimator holding the scopes.
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