Hiked about 9 miles into a foot traffic only area I was unfamiliar with. Found this brute. Shot him at 620yds with a 143eldx from my 6.5cm. It was a low cloud day with 8” of fresh snow the night before and still lightly snowing periodically. He dropped instantly then sat back after 30-45seconds on his fronts and I shot him again in the neck, dropping him flat. Then the oddest thing happened. The smaller buck that had peacefully been trailing him ran over and started goring him. I actually videoed it. He rooted and gored my deer, pushing him about 30 yards through the snow. He didn’t look at me until I was 40 yards away, heading towards him. I think with the type of day it was, he never even heard the shot and when the deer dropped he saw his chance to get him. It was bizarre.