Re: Your longest kill...
Got a couple doe whitetail at just shy of 320yds--same nice open spot two years in a row back in the early 90's. My all time longest so far came this year, bull moose at 437yds. Three shots, all solid vital hits anchoring and quickly dispatching. 338 win mag, Remington custom shop Alaskan model with Leupold 4.5-14 B&C.
A cool bonus, my hunting partner and I (his bear, but both shot) took nice brown bear off the kill site several days later.