The effect you describe is known as...August 5 2011 at 2:46 PM
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Response to Setting the Time
"backlash" in horology.
When one sets a mechanical watch or clock's hands ahead to a certain time, this creates a kind of "slack" in the gear train that requires a minute or so of gear train motion to remove BEFORE the hands will begin to move. This, of course, results in hands that do not show the set time precisely.
This problem can be eliminated by setting the hands AHEAD of the correct time and then moving them BACK to the correct time. When this is done, the hands will immediately begin to move along with the gear train and show the correct time.