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Old July 7, 2013, 04:50 PM   #1
tobnpr
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Join Date: August 1, 2010
Location: Tampa Bay
Posts: 2,963
Compensating for spin drift...

I had always thought this effect was "negligible", meaning don't try to compensate for it in the scheme of other minor variables.

But I saw something today that stated it was as much as 1/2 minute at 500 yards- and about a full minute at 1000, for a "typical" .308 bullet.

Certainly, not negligible. Also seems that it's near impossible to calculate precisely as there's too many unknowns with bullet designs.

One recommendation was to zero at 500-600 yards. It'll shoot a few inches left at very short ranges, and a few inches right at 1000. But, while that's fine for banging steel at 600 and beyond, it would require re-zeroing if punching paper or doing load workups at shorter ranges.

How do you address this?
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