Good deal, glad it worked out for you this time. You can't go wrong by waiting a bit to track a deer that runs off. But next time, reload the gun immediately after you shoot. Why you'd trail a deer with an unloaded gun is not clear to me, unless perhaps you had to trail on land that you don't have permission to hunt on.

Many deer are lost because hunters break one of the cardinal rules of muzzleloading.

What is the first thing you do after shooting a muzzleloader at a deer? RELOAD!!