I would recommend against Walmart beef.
There's summin' wrong with that stuff there.
I made a hamburger with it, and was wondering wtf?! Did not taste right and was tough. No more Walmart beef for me, thx.
It didn't even have a hamburger taste, that's fucked up. I will not do that again.
Just to test the theory I got some ground beef from elsewhere and tried it..made sliders as I recall, and it was just fine. Tasted really good, actually.
When one makes a hamburger, it should taste like a hamburger, dadgummit!