Weatherby Select Plus .340 Magnum 225 Grain Hornady Interlock Brass Cased Centerfire Rifle Ammo 20 Rounds. However Roy took advantage of the longer case to pack in more powder for greater velocity. And it shoots heavier 338 bullets at higher velocities as well ? a decidedly powerful combination. Ideally suited for animals the size of elk or larger the 340 can also be used by deer hunters with lighter bullet weights. Specifications for Weatherby Select Plus .340 Magnum 225 Grain Hornady Interlock Brass Cased Centerfire Rifle Ammunition: Manufacturer: Weatherby Caliber: .340 Weatherby Magnum Number of Rounds: 20 Bullet Type: Jacketed Soft Point Boat Tail (JSPBT) Bullet Weight: 225 grain Cartridge Case Material: Brass Application: Hunting Package Type: Box Included Accessories: None Primer Style: Centerfire Features of Weatherby Select Plus .340 Magnum 225 Grain Hornady Interlock Brass Cased Centerfire Rifle Ammunition: Premium propellants Premium primers Norma? brass cases Flat Trajectory Minimized wind drift Package Contents: Weatherby Select Plus .340 Magnum 225 Grain Hornady Interlock Brass Cased Centerfire Rifle Ammunition What is Weatherby Select Plus .340 Magnum 225 Grain Hornady Interlock Brass Cased Centerfire Rifle Ammunition good for? The manufacturer says that it is best for hunting.Weatherby H340225IL: Select Plus .340 Magnum 225 Grain Hornady Interlock Brass Cased Centerfire Rifle Ammo 20 Rounds