All of the discussion I've seen on this have to do with the cost/difficulty of the manufacturing process. In my mind that isnot the issue.

Consider the cost and bureaucracy it would take to do the record keeping.
- Every box of ammo would require a different coding number.
- Manufacturers would have to keep track of and report which individual boxs went to which wholesaler.
- Wholesalers would have to trackand report which box went to which retailer.
- Retailers would have to ID individual purchasers and report which individual got which box of ammunition.
- A Federal agency would have to maintain a data base of allthe records.
- The purchaser would pay for all of this (and you thought the HAZMAT fee was high).

If I were a bad guy, I would just go to a gun range and pick up a lot of empty brass to keep in my pocket to drop at the scene of any crime I committed just to confuse the issue andcreate a little "reasonable doubt".