I'll happily agree that the time to target is the crucial element. Taken ab absurdum
, if the pellet could reach the target at the speed of light, it wouldn't matter if it was a force 9 severe gale blowing out there, the pellet would not deviate from a straight line.
It's the mechanism of the drift that is perplexing and I've read up about it and had exchanges on here and on other forums. What happens to the pellet in flight, in a wind, is in my opinion not fully described by the models that we use, and normally accept as given. Good that we can debate these things.