Browning BPR 17 HMR 17gr. PolyTip Ammunition, 50 Round Box. This performance rimfire ammuntion features a polymer tip for a flatter, faster trajectory. Rated at 2550 Feet Per Second, this ammuntion is a great choice for small game hunting. BPR Performance Rimfire (Hunting) consists of two high level performance products. These products are designed for smooth feeding, reliable extraction, and consistent performance.