Kraky,
Jordan and the others are correct. We've shot over multiple acoustic targets set in line from 100-1000yds and all rounds group in proportion to range. It is possible due to gyroscopic precession to have a SLIGHT difference, however it is a TINY difference.
The most notable was certain rifles meant for extreme long range chambered in 408 CT. They claimed that the reason the guns were shooting 4-6moa at 100m was due to "the bullet not going to sleep" yet, and that at 1000m plus they shot "great". The acoustic targets didn't show that at all, even though some shooters did shoot smaller groups at 300m than they did at 100m. However once we removed the shooters ability to see their rounds impact on target at 100m, their groups shrunk to be inline with their distance grouping. i.e.- the shooters were mind humping themselves.
Once Bryan threw the gauntlet of paying people to actually prove bullets shooting smaller groups at longer range than at shorter range, most of the "going to sleep" nonsense ceased.
