What cut of beef is popeseye rump steak?

"Popeseye" is not a recognized cut of beef. It's possible there's a typo or a regional name for a cut of beef.

Here are some common beef cuts that might be what you're thinking of:

* Rump Steak: This is a cut from the sirloin primal, known for its rich flavor and tenderness.

* Top Sirloin Steak: Also from the sirloin primal, this cut is leaner than rump but still flavorful.

* Sirloin Tip Steak: A flavorful and economical cut from the sirloin, it can be a bit tougher than other sirloin cuts.

If you can provide more information about where you saw the name "Popeseye," I may be able to help you pinpoint the actual cut.