Hornady Superformance .257 Roberts +P 117gr SST 20/Box $60.95 $39.85 Hornady Superformance .257 Roberts +P 117gr SST 20/Box increases your rifle's performance up to 200 FPS (Feet Per Second) without extra chamber pressure, recoil, muzzle blast, temperature sensitivity, fouling, or loss of accuracy. This... Compare Out of stock