I just know that this is where I hit. The bow was a Bear Whitetail shooting about 50lbs. The arrow did not do a complete pass through.

I remember watching the deer trot away and I could hear the alluminum arrow hitting twigs and brush. I was young and very excited but I remember it pretty well. Maybe I did catch one lung and it wasn'y lethal. I just know we tracked it quite a ways. Found just enough blood to know we were on the right trail. The deer was using it's senses and taking deer trails. We followed a long way and possibly jumped it the following day. I wanted that deer bad so I didn't give up easy.

I just know that when I gut a deer, the chest cavity inside the ribcage has alot of space in there. The lungs don't fill it all up. There's always a lot of blood and clots in there sloshing around. Just seems like a lot of empty space in there. And when I consider gravity pulling the lungs down towards the bottom of the chest cavity, I think there is an air pocket there. Maybe I'm wrong.

I guess a veterinarian could answer this.