Mostly groundhogs in the 400yds to 650yds range... Tough stuff.... LOL
For a true game animal I think I killed an antelope at 425 once and have nailed a few coyotes well beyond that.
Oh yeah.... Once poked a whitetail at 613 but I'm pretty sure I got lucky on that one... I grossly miscalculated the wind and when I got my Kestrel
out after the shot it was blowing 7mph and I estimated 15 but was in too much of a hurry to get the shot made. That shot was purely a hail Mary and as I started squeezing the trigger I was already thinking I was taking too much of a chance wounding him.
I swore I saw him run off but when I finally found him he appeared to have dropped in his tracks because the Partition made it through which was another surprise and there was hair and blood just beyond him. It's hell shooting game here in north Florida long range because unless they're standing in a road, as soon as they lay down, they disappear completely until you're standing over them due to the crazy thick vegetation.
Anyway... Why do you ask?