Thanks for the info - I'll clarify a little bit more - These homes are steel studs, joists, and sometimes trusses - drilling thru the top plate is a pain because there is a half inch of OSB on the top plates (to act as a dampener I guess) - anything bigger than a 2 by 4 is bad because the gauge of steel is a lot heavier - you really try to plan your layout well to minimize drilling overhead - so far the best bits seem to be Milwaukee's - a punch really wouldn't work thru the top plate (with the OSB and heavier gauge)- sometimes I'm tempted to think a 12 gauge slug would do the trick!
