Federal Premium Power Shok 16 Gauge 4/5oz Power Shok Rifled Slug Centerfire Shotgun Ammo Rifled Slug Shot 5 Rounds F164 RS. The projectiles are designed for accuracy and expansion and give a definite "twang". Both projectiles utilize the "notch cut" nose often found on rifle barrels. The Federal Power Shok Rifled Slug Rifle Shot features a definite "twang cut" on the nose often found on rifle barrels. This results in a projectile that is "twang cut" on two sides which is why they give the "punch" sound effect and so-called "double-diminutive" sound. However they offer plenty of "sting" so they are still good for taking down waterfowl and other game that can be run and gunned with shotguns with slower barrels. Note: Quantities shown do not include choke tubes. Specifications for Federal Premium Power Shok 16 Gauge 4/5oz Power Shok Rifled Slug Shotgun Ammunition: Manufacturer: Federal Gauge: 16 Number of Rounds: 5 Shell Length: 2 3/4 in Muzzle Velocity: 1600 ft/s Application: Medium Game Shot Material: Lead Primer Style: Centerfire Bullet Weight: 350 grain Bullet Type: Rifled Slug Hollow Point (RSHP) Cartridge Case Material: Steel Lead Free: No Shot Size: Slug Shotgun Shot Weight: 7/8 oz Features of Federal Premium Power Shok 16 Gauge 4/5 oz Power Shok Rifled Slug Centerfire Shotgun Ammunition Designed for use in smoothbore barrels Ample power for deer and similar game Soft lead slug delivers good expansion Package Contents: Federal Premium Power Shok 16 Gauge 4/5oz Power Shok Rifled Slug Shotgun Ammunition What is Federal Premium Power Shok 16 Gauge 4/5oz Power Shok Rifled Slug Shotgun Ammunition good for? The manufacturer thinks that it is good for medium game.Federal F164 RS: Premium Power Shok 16 Gauge 4/5oz Power Shok Rifled Slug Centerfire Shotgun Ammo Rifled Slug Shot 5 Rounds