12 Gauge 2 3/4" Buck and Slug Ammunition. The Phoenix Rising Slug and Buck is the most advanced round of its type in the world. Each Round contains 6 hard cast 00 Buckshot and 1 - 7/8 Oz. alloy slug. All of the projectiles are FSJ coated. FSJ is a full Synthetic Jacket. It reduces projectile deformation and provides greater velocity, penetration and accuracy. The Phoenix Rising Slug and Buck produces 1,225 ft/ps velocity and 2,356 ft/lb of energy. An excellent defensive and big game round. 5 round pack.