In A Large Bowl, Mix Together The Ground Beef, Sour Cream, Onion Soup Mix, Bread Crumbs And Pepper Using Your Hands. Refrigerate While You Heat Up The Grill So The Flavors Have A Chance To Blend. Preheat A Grill For Medium Heat. Form The Ground Beef Into 8 Balls, And Flatten Into Patties. Grill The Patties For 6 To 8 Minutes Per Side, Or Until Well Done.