A few years ago I hit a big 10 right around there. He did run either, took a couple hops and walked 50 yards and stood there for 5 min. Then walked down the hill. I wait 30 min. and got down found the arrow and saw the blood trail. Went back and got my buddy, told him, lets go get my buck. Anyway, he bled like a stuck pig for about 75 yards, big pool of blood where he stood. After that nothing, looked for him for 3 days, nothing. Long story short, a guy shot him during shotgun season out of the same stand. When we dressed him out, he only had 1 lung the other taken out by my arrow. Tough SOB. I hope you find your buck, but if you don't, I think you still have a chance him down the road. Good luck........