5.56 62GR Black Hills Barnes TSX BT (D556N18)5. 56 62GR Black Hills Barnes TSX BT (D556N18) Black Hills focuses on handcrafting ammunition for serious folks who demand it works every time without fail. No magic loads. No gimmickry. They they stake their reputation on dependability, accuracy, and performance. To them, theres no such thing as too passionate, too obsessive, or too particular. After all, those words justify the fact that their defensive and training ammunition is counted among the