In a large saucepan or Dutch oven, heat oil over medium heat. Add corn and chili powder; cook for 3 minutes, stirring frequently. Stir in beef tips with gravy, salsa, beans, and barbecue sauce. Bring to boiling, stirring occasionally to break up beef slightly. Reduce heat. Cover and simmer for 5 minutes.
Top each serving with sour cream. If desired, serve with corn muffins. Makes 4 servings.