Here is a rub I use for beef. I use it on Brisket and on london broils.
3 tablespoon coarsely ground black pepper (I will substitute 1 TBS with the 5 fiery pepper for a lil more spice)
2 tablespoons table salt
1 tablespoon granulated white sugar
1 tablespoon onion powder
2 teaspoons mustard powder
2 teaspoons garlic powder
2 teaspoons chili or ancho powder
1 teaspoon chipotle or cayenne powder
I'm not much on injecting. When I do a brisket I will rub the night before atleast. Wrap with aluminum foil with a lil beef broth, apple juice and cider vinegar.