Joe, you have my number there. I'm sitting here finishing the last drop of the best thing ever to be put in a bottle. McKewan's Scotch Ale. Totally illegal here in the Not so Great State of Iowa. But this was smuggled in, by me, from the much better state of Wisconsin.
Anyway, I offer up an example match. Three shooters, Beau, Joe, and Butch. A 3-shot match, and the shots were on different bulls, but I combined them onto one bull here because I can't spend my whole night drawing funny pictures. PLUS, I'm out of beer. So, the rest of you will have to figure out how to extend this to the PSL format on your own.
Anyway, the targets are measured to the centers of the bullet holes. The unit of measure is the very technical aero-space Toidi unit which can be translated into imperial inches but that costs money and beer. Ask me later. Ring scores are 50 for the outer, 100 for the inner.
Note who wins in the string measure match, and who wins in the ring-score method. Which shooter is more accurate? Forget precision - this is a score match, not a group size match.
FWIW, I realize that this professional league is not likely to jump into ring measure right off the bat. That's too bad, but given that the best of the best will be competing and given that a whole lot of money is on the line (or at least beer money which is much more valuable dollar for dollar), consider it for the future. After all, pro football eventually got instant replay, Olympic swimming got electric touch timing panels (for which Michael Phelps is eternally grateful), the Kentucky derby eventually got photographic finish scoring, and god knows what other improvements have happened in sporting events.
So, maybe ring scoring will go the way of the stop watch and the dodo bird... And then again, maybe not.
Brent