The .300 Winchester Magnum is a belted, bottlenecked magnum rifle cartridge that was introduced by Winchester Repeating Arms Company in 1963 as a member of the family of Winchester Magnum cartridges. The .300 Winchester Magnum is a magnum cartridge designed to fit in a standard length action. It is based on the .375 H&H Magnum, which has been blown out, shortened, and necked down to accept a .30 caliber (7.62 mm) bullet.
The .300 Winchester is extremely versatile and has been adopted by a wide range of users including hunters, target shooters, military units, and law enforcement departments. Hunters found the cartridge to be an effective all-around choice with bullet options ranging from the flatter shooting 165 grain to the harder hitting 200+ grain selections available from the factory. It delivers very good long range performance with better bullet weight than most other .30 caliber cartridges. Military and law enforcement departments adopted the cartridge for long range sniping and marksmanship. As a testament to its accuracy, since its introduction it has gone on to win several 1,000-yard (910 m) competitions
Product Info for Barnes Vor-Tx Long Range Centerfire .300 Winchester Magnum 190gr LRX BT Rifle Cartridges – 500 Rounds
VOR-TX LR is an extreme-distance load combining super-premium components that are assembled with a level of precision never before attained in factory ammunition. The specially engineered LRX bullets loaded in VOR-TX LR are optimized specifically for the cartridge. Unmatched flight characteristics combined with a specially engineered nose cavity that peels back into four cutting petals delivers massive expansion and identical on-game devastation from up close to well past 700 yards. Each box includes ballistic charts that identify the G1 ballistic coefficient and address variables such as velocity drop energy and wind deflection ? calculated at sea level and 5000 feet elevation. More detailed information such as the G7 ballistic coefficient and long range dope calculated in MOA & MILS can be found here under the BALLISTICS tab below. VOR-TX LR achieves match-grade accuracy and unmatched terminal performance on game at close and extreme distances delivers the quick clean ethical kills you?ve come to expect from Barnes. Distance can change all it wants. The terminal performance of VOR-TX LR never will.
Design and specifications
The .300 Winchester uses the same case head design of the .375 H&H Magnum, its parent cartridge. The taper of the cartridge was reduced to provide the cartridge with more volume so as to increase its potential powder capacity. The lengthening of the case and the move of the shoulder forward over the .338 Winchester Magnum allowed for the reaming of the .308 Norma Magnum or .30-338 Winchester chamber to dimensions of the .300 Winchester Magnum. The down side was a neck which was shorter than the caliber of the bullet it fired, which meant that the bullet had to be seated more deeply in the case
for Barnes Vor-Tx Long Range Centerfire .300 Winchester Magnum 190gr LRX BT Rifle Cartridges – 20 Rounds:
Caliber: .300 Winchester Magnum
Number of Rounds: 20
Bullet Type: LRX Boat Tail
Bullet Weight: 190 grain
Cartridge Case Material: Brass
Package Type: Box
Primer Location: Centerfire