My experience with wall cabinets installed on interior walls with metal studs is to forget using the studs for any strength. I use very large hollow wall anchors, the ones with spring loaded wings,(requires a 3/4 inch clearance hole).
I install 4 per cabinet and use appropriate washers to allow the anchor head to cover the 3/4 inch clearance holes
My experience with using lag screws and hitting the metal studs is that the metal studs are so thin the lag easily strips loose
Handie
__________________
Upstate NY and The Villages-If your not living on the edge, your taking up way too much room."