Birchwood Casey Dirty Bird 12in Sight-In Target - 100 Pack - Use this large 12 inch sight-in target for sighting-in firearm scopes. 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 inch grid pattern and lines making sighting-in a snap. The all-around best sight-in and practice target!