Putting up some batten trim. 18 and 16 gauge nails either bend, jam or don’t go all the way in. The 16 gauge nails were blunt end, tried grinding a chisel end and same problem. Behind the batten is Hardie sheet siding which seems to be a double whammy. If the nail goes through the batten it’s lost all desire to nail into the sheet. Unless a miracle happens my next plan is construction adhesive. These are short trim boards and at ground level. #home source