There's a
resounding "click" when the sear lets go?
...
and you have a spring in the firing pin assembly? (don't laugh)
http://www.gunsumerreports.com/revie..._aac-sd_p4.php
...last check (although the cartridge/primer should have told all), can you put cleaning rod
with jag down the
barrel up against the bolt face -- and see it
jump from the firing pin protruding upon pulling the trigger?