I have double set triggers so the process changes a bit. 1: pull hammer. 2:sort of aim amd pull set trigger 3:fine tune aim check breathing and heartbeat 4:at the end of an exhale and between heartbeats touch the front trigger & kaboom.
It might help to keep you finger away from the trigger, pull the hammer back, then aim & shoot. Moving the process around might help get you past this hurdle.