Doubletap Ammunition .357 Magnum 140 grain Snake Shot Pistol Ammo 20 Rounds. With our newest line of SnakeShot our development team sought to utilize the extra space and pressure of the 357 Magnum case to provide a heavier harder hitting and deeper penetrating wadcutter that will give our customers more performance in the field. All our SnakeShot Magnum loads boast 14-16" of consistent penetration in ballistic gelatin while providing the consistent shot patterns customers have grown to love in our original DT SnakeShot line. Specifications for Doubletap Ammunition .357 Magnum 140 Grain Snake Shot Pistol Ammunition: Manufacturer: Doubletap Ammunition Caliber: .357 Magnum Number of Rounds: 20 Bullet Type: Snake Shot Bullet Weight: 140 grain Cartridge Case Material: Brass Application: Target Package Contents: Doubletap Ammunition .357 Magnum 140 Grain Snake Shot Pistol Ammunition What is Doubletap Ammunition .357 Magnum 140 Grain Snake Shot Pistol Ammunition good for? The manufacturer suggests that it is good for target.Doubletap Ammunition 357MSS2: .357 Magnum 140 grain Snake Shot Pistol Ammo 20 Rounds