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Old 07-05-2015, 09:25   #14
longrange1947
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Join Date: Jan 2004
Location: Fayetteville NC
Posts: 3,533
An ideally stabilized bullet is under spun at the muzzle, and when it gets to the intended accuracy range is properly spun. The bullet will become over spun at longer ranges.

In most bullet/barrel combinations, this is not an issue, but in some, the bullet "wobbles" around its flight path and the wobble becomes less and less until the bullet settles on that flight path. This causes problems with near range zeros.

The second problem is that the precursory column of air forms a mach disc that can upset some bullets. This requires the bullet to be over spun to maintain accuracy, another problem with transitional ballistics.
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