Maybe I should better ask, what do you quantify when evaluating patterns? My patience for counting pellets strikes in the blazing sun is limited.
I.patyern on a huge, greased steel plate. At least 4 x 8 ft, maybe 5 x 8.
A zone of 24” to about 26” on the pattern plate at specific yardage where the target can’t get through a sure kill zone in a 30” circle. The outer fringe of the 30” circle may or may not result in a kill. That area often times results in chips with clays. Anyways, that’s what I look for when patterning. It’s pretty tough to get a complete 30” circle of pattern that will always result in a kill.