No, I don't know. My guess is that the higher the score, within reason, the less time has been spent getting on the bird. If you were to think that the bird is something like 42 yards from the shooter I doubt you would be too far off, though.
I feel confident that Neil intended to say that the shooter breaks the target around 42 yards from the 27 yard line. HM is very close when he stated the target traveled about 15 yards.
But, there is much variation in shooting styles. Some shoot fast and some shoot slower. The question mentioned the "average 27 yard shooter" and I don't believe there is an average 27 yard shooter. All are very different.
A201, if your getting ready to shoot 27 yd targets and don't normally, you may even want to consider 45 yd patterning. There will likely be a huge difference in what they look like in that extra 5 yds.
MK- Out of the house, the target is traveling about 21 yards / second and your estimate of 3/4 of a second is about right. But, you failed to appreciate that shooting within 3/4 of a second is not fast shooting at all. To me, it seems rather slow.
Also, when you look at targets from the side it is difficult to estimate the base of the triangle. Your reference points are typically well beyond the target flight. Also from the side, it will appear that the angle targets are broken much faster than the straight away targets. This is simply a visual error.
pheasantmaster- I absolutely will never again pattern anything at 45 yards. At that pattern distance, I can look at a pattern and conclude that I could never break a good score.
Continue patterns at 30 yards. A great pattern at 30 yards will be a better pattern at any distance. Nora Martin Ross, tells us in clinics that the only real usable part of the pattern at long yardage is the center core. The rest is too unpredictable.