I've fired one shot at 65 and one shot at 75 just to see what it would do. At 65, it seems like it had about 120 hits in the 10" circle. I know it was better than factory #4 would do at 40. At 75, the number had dropped to 75 hits. Although its a good idea to have 100 in the pattern you call your max range, I am confident that 75 of these pellets will kill him every time. I would consider that the max range.

And of course I was just measuring the center of the pattern. It would most definitely kill all 3 turkeys if they were standing there together.

Hal has tested way more than I have; he might be able to give a more detailed answer.