I've killed numerous white tail does under 10yds...I shot one with a 30-06 one time at about 7'...Saw my dad shoot a red fox years ago at 5' with a 30-06, lol, not much left of that fox.
I didn't shoot it but I called a big spring gobbler in for my buddy's son "it was his first bird" and he damn near shot it off the end of his boot. I setup about 40yds behind him, bird was at the bottom of a hill, we were on top...Started calling and bird came on a dead run, jumped a big downed tree and almost landed in his lap when it hit the ground when he blasted him. Big bird too, weighed like 27-28lbs and had 3 beards.