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January 2, 2018
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Spin drift is a deflection generated by the gyroscopic motion of the bullet. The direction of the deflection is toward the direction of the spin, and the amount of deflection is dependent on bullet length, flight time and, not surprisingly, spin rate. Its effect is noticeable, and must be taken into account, starting around 500yds.  The metrics of spin drift vary widely, therefore it’s hard to account for the exact effect of spin drift on a bullet at extended ranges when shooting.  It’s an envrionmental hazard that only the most talented pros know how to compensate.  TrackingPoint’s optics technology includes gyroscopic drift in it’s calculations when determining the ballistic coefficient, ensuring you hit your target every time.

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