Thanks everyone, still pretty fired up. Started to get him cut up this evening, head is going to the taxi tomorrow.
@Chancegriffis I am shooting 60# with a 29.5" draw, 300 Easton Axis 4mm, 50 grain outsert, 125 grain broadhead. I made the switch to the G5 T2 broadheads, despite me being a pretty committed fixed head guy forever. He was standing at approx. 20-25 yards broadside, and my arrow entered perfectly behind the shoulder (seen in pics) and exited just in front of his opposite side rear leg. Based on the entrance and exit angle, it would've been tough to pop both lungs, but both were completely destroyed. The broadhead didn't hit any ribs on the entrance, and there was no obvious deflection i could see on the opposite side of his rib cage. Once i get all the meat off tomorrow, I'm hoping to have a slightly better idea of how/ why that happened. I've been told that 2-blade mechanicals are kinda known to deflect, but I'm not entirely sure wtf happened yet lol