It really is, and when you see it happen you know exactly what you hit. The last deer I hit like that literally jumped straight up in the air at the shot, sprayed blood 6 ft out either side, hit the ground and flipped over all in one motion. I was like.............[:-]

If you want to see a PERFECT example of this hit watch the newest Primos Bowhunting video #4. Will Primos shoots a buck facing to the left in this exact spot. The shot looks a tad forward but trust me it's not. IMO it'sa prefect hit but doesn't give you quite the margin for error that a higher, slightly further back double lung shot will.
Anyway the deer is hit and sprints off maybe 20 yards and just CRASHES into a small tree and flips over dead in some water. I'm talking 2 seconds TOPS and that deer is on the ground.