Weatherby Select Plus 6.5-300 Wthby Mag 156 Gr Berger Extreme Outer. 5-300 Wthby Mag 156 gr Berger Extreme Outer L - Weatherby Select Plus with the ultimate in speed power and velocity. It's the flattest shooting hardest hitting most accurate ammo you can buy. It pairs Weatherby's magnum design with the most popular bullet offerings from Barnes Hornady Swift Berger and Nosler. With Select Plus there's a bullet option to meet every hunting or shooting situation. Specifications for Weatherby R653156EH Select Plus 6.5-300 Wthby Mag 156 Gr Berger Extreme Outer L: Manufacturer: Weatherby Caliber: 6.5-300 Weatherby Magnum Number of Rounds: 20 Bullet Type: Boat Tail Hollow Point (BTHP) Bullet Weight: 156 grain Cartridge Case Material: Brass Package Type: Box Primer Style: Centerfire