User blog comment:Jartsa67/question about souls/@comment-11331875-20130829165332/@comment-1509826-20130829211647

Thank you, and I know it wasn't stated, but it was hinted at. For example, Bobby was trying to make new bullets throughout the episode, before Ruby arrived. Later after he killed the crossroads demon, Dean realised what he did because a bullet was missing, implying they didn't have many, or else Sam would have replaced it. Further more when they got the Colt back from Crowley, he went to the trouble of giving them more Ammo aswell. Its shaky I know, but All that suggests to me that she only managed to create more bullets. Thus explaining why Bobby never tried to build a new colt.