Federal Premium 454 Casull 300gr Swift A-Frame Handgun Ammo - 20 Rounds - Handgun hunters leave nothing to chance when it comes to bullet choice. That's why Federal is proud to offer the robust, proven Swift A-Frame. High weight retention and controlled expansion, regardless of distance, make these rounds ideal for big game. Expansion-Arresting A-Frame Design; Nickel-Plated Case Prevents Corrosion And Helps Extraction; Back Half Of The Bullet Remains Intact For Deep Penetration; Bonded Front Half Expands Consistently Across A Broad Velocity Range; Specially Formulated Propellant; Unique Federal Primer;