I have no idea why it didn't bleed or why it ran so far.
It's odd compared to the number of deer hit that don't do that....the last buck that I shot did the same thing. I have noticed that I've had to track almost all of the bucks that I've shot, short distances, but all were NOT within sight of the location where they were hit, while the does go down faster. I think lack of blood from time to time is because the body cavity is capturing it.
One of the advantages of the ML gun that I've found is that once an accurate load is determined, and the shooter stays within that accurate range, if nothing else is there to spoil the shot, one can be sure the deer was hit. I have spoken to fellows who complained they "missed today" and can't understand it as it was their pet muzzle loader load, and they had a good resting position, tight, and good sight picture, but no blood trail and the deer ran off. I've helped them find their deer by going back with them and not assuming anything other than the deer was hit and hit hard. Every time the deer was found much closer than the hunter thought.
It happened to me on my last buck, but I didn't stop looking. The buck was on the side of a very low hill, only about 40 yards from me, and I fired. He jerked, then went over the top of the hill to the other side. So I reloaded while waiting 20 minutes, then went to collect him. It was a broadside hit, after all, and he should be just over the rise.....nope.
A mowed field of grass on a defunct sod farm was where he went, and no blood trail. He should've been right there. There was a barn about fifty yards farther away and north of where he had stood, so maybe he went around it and was on the far side...nope.
Well after two hours, back and forth in the field, looking for sign and ignoring the tiny clump of near by, knee high grass, no wider than truck tire in diameter, I found him lying down behind the clump of grass. I'd walked within 20' of him many times.
I assumed it was too small to lay down behind and hide.
DUH-OH!
LD