Unlike other bullets that can fail to perform on impact at lower velocities, Federal PremiumA(R) Edge TLR(TM) uses the exclusive Slipstream(TM) polymer tip to initiate expansion at long range. At close range, the bullet's copper shank and bonded lead core retain weight for consistent, lethal penetration. Its long, sleek profile offers an extremely high ballistic coefficient and AccuChannel(TM) groove technology improves accuracy and minimizes drag. Mfg: Federal