I am remodelling my basement and fixing metal stud framing around the exterior wall area. I am using screws.

This is all going fine except drilling into the concrete slab to fit the trough using anchors and tapcons is proving difficult.

I have tried using concrete drill bits and even ones for granite but on some areas a single hole will dull an entire bit.

Is there an easier way to do this that will save me cash on going through drill bits?

I do not want to use nails though (or is this why people use nails?).