you know how the shotgun can take forever to reload yeah there's a glitch with the shot gun if you pause the game while reloading it'll keep reloading i think it only works for the normal shotgun bt it could for the sawed-off as well. also for some that dont know if your able to get your meter filled again after the ak47 there's a upgraded sniper rifle (dont read the names) that goes through at least three zombies not good for headshots, i was only able to get it on day 20 though..