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?
Mosin-Nagant Custom Shop/Bent Bolts
Gun-Kote/ Cerakote Refinishing
Criterion Barrels/ Savage Re-Barreling