Go to your local Wally World or gun place and buy a name brand box of 9mm and try them out. If they all fire ok the problem was bad loading on the part of the Washougal River Cartridge Company where you bought the first batch. If the name brand bullets also have misfires and some do not work properly there is either something wrong with the pistol or you are limp wristing your shots.
http://en.wikipedia.org/wiki/Limp_wristing