Yeoman I wonder if you didn't hit the shoulder higher than you think? Like in the notorious "dead zone" that is above the shoulder and below the spinal column? That load of yours should've made mincemeat of ANY whitetail shoulder and at least cleaned out one lung and probably both. The bone fragment you got could've been ribs or chips from the top of a shoulder or even the bottom of a vertebrae? The lack of blood indicates no exit and if you hit one that high they have alot of internalbleeding before they fill the body cavity too the point where the blood starts pumping out the entrance wound (this is why I demand an exit hole!).

Don't discourage yourself from that load if it works for your gun. Just might wanna re-check your zero and make sure it isn't abnormally high, or heck if he was a nice one like that you could've had plain ol' buck fever... lol we all get it. If you don't then you need to take up golf!

Better luck next time,
RA