National records are generally set in very favorable conditions which is also when open mic e-targets perform best so IMHO they should probably be valid. What’s not good is when the wind picks up and those liner 10’s turn into 9’s or the 9 is a 10 or it ghosted a shot or a missed shot or .,,,
That is when they work best, but in fairness to all if adopted for records more info or manufacturer transparency on their sensitivity to the Doppler effect, what we are talking about, would be nice, that means an open frame and mic set up doesn’t know the difference between the wind changing speed or direction that sound had to travel through differently, from a shot landing away from prior/center: as the reason why one side’s mics now fired before the other, relative to before the wind change. As a result it’s going to split up a pair of shots that in reality hit on top of each other. (The manufacturers would have to agree that if the wind changed for every single shot, a perfectly called true one hole group would
never be displayed as such, and also that a honey comb “group” as proven out on paper, but shot in sync with wind changes, could very well be reported as a one hole group, if that matters.)
This means that the shooter must as usual dope the wind, which information we all have equal access to, but, if we are being entirely honest, a shooter should also be able to dope the effect a wind shift has on the
target’s operation, which we do not widely have access to, but is most certainly a real thing, whether it
should be part of a game as traditional as bullseye shooting, or not. I don’t know whether it’s more analogous to learning programming errors hidden in a video game, or unfixable slack spots in steering linkage of a car before it’s raced, but it’s real and it’s unavoidable.
I’d like to see more information on this. Obviously it means that what changes happen wind-wise right at the target, are far more important on an open E-Target than on a paper target. People should be made aware of this and scope it specifically, too.
But by how much? Some of the bigger errors are ~7-10% as wide as full value, it appears on videos. How far out is it measuring the bullet; we know it’s doing so in multiple planes because it records entry angle which cannot be accomplished in one plane.
Should we expect the effect to net out as a compounding or diminishment of the “book” wind dope, relative to paper, and is that always the same whether a build, direction change or boil? Can or should the effect be waited out? Can vertical be affected? Does frame flex have a random or side-favored effect? These types of questions.