One proposal has been microstamping[1] the bullet casings, although this was really meant for forensic identification, not regulation. I don't know how it coul

One proposal has been microstamping[1] the bullet casings, although this was really meant for forensic identification, not regulation. I don't know how it could be used to prevent home handloading[2] though. [1]http://en.wikipedia.org/wiki/Firearm_microstamping http://en.wikipedia.org/wiki/Firearm_microstamping [2]http://en.wikipedia.org/wiki/Handloading http://en.wikipedia.org/wiki/Handloading