Federal Premium 357 Mag HST Jacketed Hollow Point Brass Cased Pistol Ammo 20 Rounds. The product line has been redesigned to offer expanded line of sightability improving shootability for all shooters. One of the most exciting developments in the exciting shooting hobby was the Federal Premium HST Jacketed Hollow Point handgun round created with the same philosophy as the legendary black powder rifles that fed the Marines and Army Special Forces. This pistol reload uses a jacketed hollow point bullet a jacketed hollow point that expands reliably on impact and retains most of its weight. The jacket eliminates the need for sleeves and allows for the passage of lead without degradation. More importantly the tightly-packed uniform powder charges provide rapid uniform ignition. The pointed hollow point (JHP) bullet expands reliably on impact and the jacket ensures consistent diameters as the round penetrates deeper into the target. Federal says its precise rotational accuracy provides a consistent accurate kill-to-target energy meaning it penetrates farther and deeper than less powerful pistol rounds. Plus with a jacketed hollow point bullet the shot is more reliable as it travels through a larger number of barriers. Specifications for Federal Premium 357 Mag HST Jacketed Hollow Point Brass Cased Pistol Ammunition: Manufacturer: Federal Caliber: .357 Magnum Number of Rounds: 20 Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 154 grain Cartridge Case Material: Brass Application: Self-Defense Package Type: Box Primer Style: Centerfire Lead Free: No G1 Ballistic Coefficient: 0.051 Gun Type: Handgun Package Contents: Federal Premium 357 Mag HST Jacketed Hollow Point Brass Cased Pistol Ammunition Federal P357HST1S: Premium 357 Mag HST Jacketed Hollow Point Brass Cased Pistol Ammo 20 Rounds