Blend the profile of a low-drag match bullet with a traditional hunting projectile design and you're ready to take on almost anything that walks on four legs. Federal Premium Berger Hybrid Hunter bullet weights have been fine-tuned to provide exceptional accuracy through factory rifles. Ballistic coefficients exceed those of comparable designs thanks to a hybrid nose design that combines tangent and secant ogive features. The bullets are loaded with our finest nickel-plated brass, Gold Medal primers and specially formulated propellant for the best consistency and reliability. 280 Ackley Improved Caliber.