nothing wrong with red meat, but it is a higher fat and therefore higher calorie source of protein! High fat meats are great when the goal is to gain weight, but lean meats are much more effective when the goal is to lose fat because they fill you up, satisfy your protein requirements with less calories.
Glad you've been having success CoachPaul, just realize its not due to some magic formula, but due to reducing calories while increasing activity Red meat is not the devil, even fruit juice and soda are not the devil. Excess calories are, when the goal is to lose fat. I lost fat following a flexible dieting approach, and as long as my calories and macro numbers were in check I kept losing fat. I even had buffalo wings, burgers, etc. when I went out to restaurants, as long as I was smart about it and kept overall intake in line, like I said.
It gets harder the leaner you get, you really need to continue dialing in your diet and exercising hard! Just be careful you don't totally starve yourself, that's when metabolism slows down and you hit plateaus.