The name comes from the splatter of white that appears upon bullet impact, which allows you to immediately spot each shot. These targets are a great value and simple to use both indoors and outdoors. The black and white contrast of these splattering targets is perfect for reading shot groups. The non-adhesive back also allows you to affix to a surface as you wish, add notes and then easily save the targets for future reference. Why use paper targets when you can enjoy the splatter of Dirty Birds targets? And with the price per target comparable to paper, Dirty Bird targets are not only easy on your eyes, they're easy on your wallet. Use this large 12" x 12" sight-in target for sighting-in up to 400 yards away. Five bulls-eye targets come with aiming points for open or scoped sights making it easy to check different ballistic loads for more shooting fun. Complete with 1" grid pattern and stadia lines making sighting-in a snap.