Bill, c'mon now. Countin holes don't take a degree in physics nor do I think you believe it requires decades to learn. I've read Brian's input here for years and I think he can count. And I have faith that Brian can hit a stationary board as I have faith that you can also. I don't see a reason to discredit Brian's intelligence or abilities here. However, I do believe there are things that weren't quantified in posting of his experiment, like the internal contour of the choke at the begining along with surface finish, etc, etc, etc. But, Brian did what he did and it's data. The tests indicate the changes he made to the bore caused improvement from what he started with. I think that shows at the very least that internal barrel differences matter.
