A buddy shot one about 200 pounds with a 340 Weatherby and 210 Partition up in Maine, a hair too far back. It went about the same distance.
Sounds like a difficult angle,and tough shot especially where you catch one lung and you can expect them to travel a bit after a hit like that. I have used mostly Partitions and Bitterroots on mine....no problems.
You can't fool a bear's nose....
How do you like the Adirondack?