Thanks, Drew.

Lowery noted semi-fludic behavior (Charles, are you reading this?). The noted longer shot cloud is due to acceleration of the shot during passage in the choke constriction and reduction in internal pressure needed to achieve acceleration.

I believe the Rayleigh/normal distribution, coupled with choke effect and pellet ballistics, can be used to make a reasonable model. If statistically valid data is taken at one (reasonable) range, performance across the useful range envelope can be predicted.

With all the grad student (free) labor available to them, it will always be a mystery to me that O&T failed to develop the statistical side of patterning. By hand, it would have been a lot of work. But then, all those grad students should have equaled one low level computer.

DDA