Whisk together the ketchup, brown sugar, mustard powder, lemon juice, liquid smoke, onion powder, garlic powder, celery salt, black pepper, Worcestershire sauce, nutmeg, and hot pepper sauce in a bowl. Place the elk roast into a large slow cooker, and pour the sauce overtop.
Cover, and cook on High until the meat shreds easily with a fork, about 5 hours. Shred, and serve on the hamburger buns.
