You must aim for headshots, the joke single bullet long reload and tiny ten magazine disappears to be replaced with the knells true power upon a headshot, Death [Knell] mode, additively increasing the modded critical multiplier by 0.5x and modded status chance by 20% and granting unlimited ammo for 2 seconds, stacks up to three times and can be refreshed on consecutive headshots. Turning this pistol into a fully automatic endless fire bulletstorm rifle, who's status, crit and damage all rival any primary. If you can land a headshot at least once every 6 seconds or better it will never stop firing (every 2 to keep at max bonus stats). Enjoy the challenge.