Uncle Norby,
From what I seen and the lack of a blood trail, I'd have to say not much expansion if ANY. I will also say that it went between 2 ribs on the way through and just grazed one on the way out...so it didn't hit anything hard in it's path! I couldn't believe there wasn't a good blood trail. It was high on the lungs though and of course they fill up on the inside first..........There won't be a speck of meat ruined, but I always shoot for a bang-flop.
I guess he was just as dead 75 yards away as he was if he was a bang-flop! This is only the 5th deer I have ever shot so I am still learning. If the shot would have been more forward, he wouldn't have done much more than hit the dirt. I know it jellied the first lung and am pretty certain it got the 2nd on the way through. You can always improve with hindsight.
I was actually hoping that I would get a chance to take a 100+ yard shot to test my new scope and load. There is that "anterless tag" left........
He will be some good eatin though!