Andy, Joe, et al.
I have worked as an estimator an detailer of both structural and retired as one for a general contractor, so I am familiar with the work. Lots of counting, geometry, arithmetic, and in the case of the steel detailing trig. Nevertheless I do completely disagree with ignoring decimal points and the operation needed to put it in the right place.
Joe, because one is shooting through more "weather" and because of mirage, 200 is always going to be a challenge, but I think that you would agree that there is nothing unfair about this since it is the same challenge for everyone.
Also, I do not challenge the use of computational shortcuts. I was only speaking to the idea that one of the steps in this particular one resulted in 100 yard aggs being more heavily weighted in grands. It does not, and that was my sole point.
While matches at 200 are won by differences in actual measured size, aggregates for that distance are converted to their 100 yard equivalent, by dividing the average of groups by two, a sort of bastardized conversion to equivalent angular dispersion that is commonly referred to a conversion to MOA, even though that is not true, because a MOA is larger, different than, an inch. There is no particular harm in using this reference as long as we all understand what is meant, and what is done.
At the end of it all, aggregates are averages of a form of angular dispersion, that does not recognize the difference in difficulty of the two yardages, but since the rules are uniformly applied, there is nothing unfair about it.
Also, I admit to intentionally stirring the pot, and it had the result that I was looking for. More people became involved in the discussion. It was a tactic that I knew would likely cost me some good will, and not really damage Andy. The reason that I bothered with this discussion at all is that his recounting of how aggs are computed does not square with the rule book, but is instead an effective shortcut for doing the calculation, as long as due attention is paid to the decimal point. It is his conclusion as to some sort of resultant weighting of the result that I disagree with.
Let me end this by again congratulating Andy on his shooting skills, most recently demonstrated under trying conditions, against a tough field of competitors.