I got my cow this year with a 140gr Accubond out of my 6.5 CM Montana. The shot was at 140 yds while she walked by the rock I was perched on broadside. The bullet clipped the lower back side of the scapula going in, took out 2.5" of onside rib and exited. She froze, trotted 30yds and piled up. The rest of the herd of ~75 didn't pick up on what had happened very quickly, it took them a while to scatter and I had to shoo a few bulls out of the way to get to where my cow went down. All in all, quite satisfied with the performance of the round.