Both New York State and Massachusetts have ended their programs of demanding that manufacturers supply two sample fired cases with all guns sold in their states.
After years and years of examining those cases and putting their characteristics into databases, they have NEVER solved a crime with this information.
http://www.baltimoresun.com/news/maryland/bs-md-bullet-casings-20151107-story.html
http://www.nysenate.gov/legislation/bills/2011/s459
http://www.ammoland.com/2012/01/44-...islature-scrap-bullet-tracking/#axzz3r10XMkBb
It is worth noting that for many years, I think beginning in the late 1950s, ammunition sales from FFL dealers were recorded just like gun sales, but without a form 4473 for the buyer to fill-out. Congress observed that not a single crime was ever solved using this information about ammo sales, and Congress repealed those parts of the ammunition registration and record keeping plan in 1986 as part of the Firearms Owners Protection Act (FOPA).
After years and years of examining those cases and putting their characteristics into databases, they have NEVER solved a crime with this information.
http://www.baltimoresun.com/news/maryland/bs-md-bullet-casings-20151107-story.html
http://www.nysenate.gov/legislation/bills/2011/s459
http://www.ammoland.com/2012/01/44-...islature-scrap-bullet-tracking/#axzz3r10XMkBb
It is worth noting that for many years, I think beginning in the late 1950s, ammunition sales from FFL dealers were recorded just like gun sales, but without a form 4473 for the buyer to fill-out. Congress observed that not a single crime was ever solved using this information about ammo sales, and Congress repealed those parts of the ammunition registration and record keeping plan in 1986 as part of the Firearms Owners Protection Act (FOPA).