I believe that it was McIntosh where I read that statement, probably in the same book where he sang the praises of his late father's Model 31. I have found his supposition on both items to be argueably correct. At least in 12-gauge. For sub-gauge guns (20-bores), I do find that a bit-more choke is useful for keeping patterns from becoming splotchly and uneven. What I'm curious about is how that needs to be achieved.