I just returned from my annual spring black bear hunt. It's a spot and stalk hunt along snow slides. I usually take a .30-06, but this year I was anticipating longer shots so I took a new chambering for me...a 257WBY. I thought people might like a field report.
The load was a 100grn TSX, pushed by 72grns of RL-22 with a CCI magnum primer, and a COL of 3.205...a very accurate load out of my rifle. I took a smaller bear this year (a 5.5 foot boar). The bear popped out of nowhere, and was walking across the base of a snow slide in my direction when it quickly winded me. I took a 115 yard shot as he was briskly moving directly away from me and soon to drop down out of sight...thus I took a "Texas heart shot". The bullet entered directly adjacent the "Texas heart" and exited out the front of the chest. The exit wound was surprisingly massive for a 100grn bullet. It was at least half a fist in size, taking out three ribs and projecting some unidentifiable innards as it passed through the short length of the bear. The bear rolled forward and dropped when hit, quickly expiring.
Fortunately (and miraculously) only fractions of the rear quarter nearest the entrance hole and front quarter nearest the exit wound were blood shot. I think I got off super lucky because the tissue damage to the chest was extensive around the exit site.
P.S. No pictures...sorry.