Thats a shooter to me too. I knew you guys would do well.
My pastor got his biggest buck ever too, the day before. He shot once, before the feeder went off, with his Rem .308 (semi-auto). I saw the brush whip and the buck flinched slightly, but I was sure he shot over him. The buck wandered up the hill, acting unscathed. I told him he'd be back when the feeder went off and the does returned. Sure enough, he did. He put the gun up and said "It's jammed." He wasn't kidding. Impossible to clear. I told him to use mine and he adapted and overcame, even with my left-hand stock pack on it. As we gave the buck a few minutes to expire completely, I looked again at his rifle. The scope wasn't level and when I grabbed it, it rotated fairly freely in the mounts.
When we looked at the buck, both his back legs had the slightest nick in each one. I had come close to having a real rodeo on my hands. We got in the previous evening so there wasn't time to fire at the range and he said it was "on". Live and learn. All's well that ends well. The rifle is on it's way to repair (and cleaning), probably with a live round resting against the spent cartridge. I'm gonna try to come up with a better scope for him.