The birds I shot today off the rock wall today "rocking them" vs "barking them" were actually @ 97 feet.
Sabotloader - did you mean yards? Couple thoughts - if you set them up on snow (hopefully not an option from here on out) you could tell, or, set them at the back edge of a puddle, or, set them up on a large flat rock where you would see the lead impact on the rock. Hey, set them up on that piece of trash left by the idiot!
Those 460 leads must really pack a whallop at those velocities. How's your shoulder after all those shots?
Also, how did you get the shot numbers to show on the target you posted? That's very helpful in understanding what you were doing.
Now, a final request ............. after your shooting "match" today, simply post a picture of whichever truck is clean and shiny, we'll know the rest of the story.