"Woodchuck, 450 yards with a Bishop-Stocked and glass-bedded Savage 110, 30-06 and 2.5X Weaver scope. I handloaded 150 grain Remington Bronze Points on a CH H-Press with CH dies. It was around 1961, when I didn't know it wasn't possible to shoot woodchucks that far away"
i had a similar experence "back in the day", it was late 1960's, early 1970's, it was with an iron sighted winchester M94 in .30-30 winchester, it was over 300 yards, but i dont rember the exact range, but it was at a groundhog standing in a field.
ken