On Thursday, May 10, 2018 at 2:01:10 PM UTC-7, OFWW wrote:
I have a new wall dividing a room made with steel studs, like you
would see on most commercial jobs.

Problem is with the floor molding attachment. I know nails should be
fairly worthless there

Maybe not. The classic molding of yesteryear was a rectangular
board that didn't follow the curvature of the wall, or the
dips and warps of the floorboards, but you can hide the cracks
at the floor with a quarter-round 'shoe mold', and the cracks
at the wall are covered with a decorative top trim (both the shoe
mold and the top trim are flexible and DO follow the curvature).
So, it's a matter of attachiing the board (glue, or screws into the metal studs),
and then the shoe and top trim can be pinned to the board; those
pneumatic pin nailers work well for this.

Regular old plaster walls didn't take nails well, either.