I don't believe that bullet accuracy falls as it goes through the SOS. Shooting CF bullets at lower and lower speeds through 100 yard targets NEVER saw a small-big-small group as v varied.
I never found a lesser range where a 22rf, that was accurate at 100 yards, was inaccurate. If it shoots at 100, it shoots about proportionally as well at all lesser ranges-and I never found a lesser range where it went nuts. (I can't test this at my current range)
Mann shot to 175 yards through screens-see "Comparative 100 vs. 200 Yard Butts", plate 18, pg 204. He says nothing about the bullet accuracy falling then getting better-that I can find.

I don't think that bullets go nuts at SOS and then heal themselves.

If you're shooting and holding off right for a wind from the right and if no transsonic, bullets hit center.

Everything the same but transsonic. For a tiny time, less drag, less velocity loss, less wind drift and the bullet hits to the RIGHT.

So, if this is right, then LR shooters in a given wind require LESS hold off on hotter days or at higher altitudes; because v increases and transonic happens further out.

200 yards? wind. 22rf? wind. There's no transsonic accuracy effect in no wind/tunnel with 22rf to ~100 yards.

Throw the calculators away. Look at the score cards

Results win matches theory's don't.

Boats

It has been proven that slugs, as they pass back  from supersonic to subsonic, have a material shift in the center of pressure resulting in temporary upset. Frank Tirrill (sp) had a wonderful series of articles on the issue  complete with high speed photos.
The issue becomes important when this occurs near the target distance. After the instability the slug recovers.
All of these experiments by him were conducted with rimfire ammunition and it was at about the time, and I believe, contributing, to the fact that so much rimfire match ammunition is now subsonic.

Consider these numbers from (You need to Login or Register to view media files and links) online ballistics program.

Muzzle velocity - 1500 ft/sec, time of flight (1000 yds) 2.881 sec. Wind drift (10 mph at 90 degrees) 155.2 inches.

Muzzle velocity - 1000 ft/sec, time of flight (1000 yds) 3.623 sec. Wind drift (10 mph at 90 degrees) 109.6 inches.

Less drift at 1000 ft/sec than at 1500 ft/sec.

Basically, wind drift isn't a function of how long the bullet is in flight but rather how long it takes the bullet to get to the target minus how long it would take to get to the target in a vacuum. (no air resistance)

The mathematical formula is:  D = ws(T-t).
Where D is the drift of the bullet.
ws is the component of the wind speed perpendicular to the bullet path.
T is the time it actually takes the bullet to reach the target.
t the time it would take the bullet to reach the target in a vacuum.

The expression "T - t" is sometimes referred to as the "lag time".

To get the value of "t" just divide the range by the muzzle velocity.

At 1500 ft/sec t = 2.000 (3000/1500). At 1000 ft/sec t = 3.0 (3000/1000)

Therefore at 1500 ft/sec mv the lag time is .881 sec. (2.881 - 2.000).  At 1000 ft/sec mv the lag time is .623 sec (3.623 - 3.000)

10 m/hr = 176 in/sec. 

At 1000 ft/sec D = 176 x .623 = 109.6 in.
At 1500 ft/sec D = 176 X .881 = 155.0 in.

It's counter intuitive but real.  Bullets below the speed of sound have less "time lag" as they travel downrange so have less wind drift.

Sorry about the math, I can't help it, I'm a retired math and physics teacher.

B'duckie

1000 foot seconds I don't believe would get the bullet to the 1000 yard target. If it indeed was able to low flying aircraft would be more of a concern than wind drift. The bullet would be traveling through a multitude of air layers with varying air current speeds and directions that it would next to impossible to come up with an accurate read on where and how much one would need to hold off. 

JLouis

frnkeore wrote on Mar 21^st, 2014 at 6:40pm:

The math and theoretical physics can be interesting but what counts is what happens out in the field.  But sometimes those things can give indications of what ideas are worth pursuing.

As an Aeronautical Engineer told me once.  "All that theory is great for designing airplanes but we still need wind tunnels."

B'duckie

And there's that other element you mathematicians don't take into account - that bullet will actually lose speed along the way, so that supersonic bullet at 1300 fps will be already subsonic at 200 yds, and the rest of the distance (800 yds) it will be below the speed of sound.  So better adapt that formula to take into account the velocity loss along the way.
I'd suggest checking whatever is happening at actual matches, and I can guarantee you no one is shooting at 1050 fps, and not for lack of trying...  Theory is and remains theory - but ES will indeed kill your vertical at those MV's.