[Havoc]

>Powder is measured down to the individual particle using scales costing over 1,000 dollars.

Really? I'd imagine that at those ranges it would make more sense to spend all your time on superior wind & barometrics measurements rather than counting powder particles...

[slr555]

You're point is valid but some of the participants are spending 10K+ for Vectronix range finders so they are pretty far down that rabbit hole already. Wind is a dark art because at those ranges it likely varies in intensity and direction over the distance to the target. I guess you could say they are having to estimate the effect of multiple competing force vectors. I have read that some people consider the spotter the more skilled member of a two person shooting team, implying that the wind calls and environment are more difficult than the holdover and breaking the shot.