I don't know that I'd say spin drift is basically nothing. For example ( probably not the best ) a .223 cal. 55gr projectile, BC 0.235, MV 2780 fps, zeroed @ 200yds. Using Strelok Pro the results at 1000 yds: Spin Drift is 19.8"/50.29cm, Coriolis Effect is 4"/10.16 cm. Total of 23.8"/60.45 cm. Certainly enough to worry about at the range, let alone if you were keen enough to attempt a shot on a live target @ 1000+yds.
Just my musings after a couple of beers,cheers.
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