This thread reminded me of something Chris Batha said in his book Breaking Clays. In a brief discussion of Cutts Comps, he said that the only real effect that these devices have on the shot charge is that they attenuate the shot string and stated further that the only clay sport in which this would be of an advantage would be skeet. And the specs set forward in the initial post here are most similar to a skeet field's middle stations (#s 3, 4, and 5) but sort of grade into trap anges at sta #s 1,2,6 and 7.
To me this seemed somewhat counter-intuitive and that, if anything, a long shot string would be more of an advantage in trap (or, say, an upland bird flushing before and away from the gun).
It seems to me that outdoorlvr's 90 degree interception of target and shot charge (i.e., sta #5) would mathematically be the least likely scenario for a long shot string intercepting a moving target. Conversely, it seems that the shallow angles typical of trap would make convergence much more likely. A simple thought experiment would prolly substantiate this, dontcha think?
