First off, if the deer ran by another guys stand that close to you, you need to find a new place to hunt. If that is not an option, I would start shooting deer high (about 4" below the back line) in the shoulders, where the neck, spine and shoulders all come together. They will always drop on the spot where they get hit. No running off past another guys stand. If you had hit him right, you should have waited at least 20 minutes for the deer to bleed out, thus avoiding the situation also. It is difficult to see a deer go down in sight and not think he is dead. It happened to me once with the bow and the gun.