January 31, 2023
By Game & Fish Staff
Designed for big bears in bear country, Winchester's Big Bore ammo is a great option for big-game handgun hunting or for personal protection in the backcountry. Available for 10mm Auto, 357 Mag, 44 Rem Mag and 45 Colt guns, this round promises deep penetration, optimized expansion and reliable performance.
Big Bore centerfire pistol offerings feature a newly engineered semi-jacketed, concave hollow point that controls and delays expansion to achieve massive shock and lethal wound channels. Available in the pistol calibers popularly carried in the backcountry, Big Bore was designed to offer consistent expansion, massive energy deposit and most importantly, trusted functioning. This is ideal ammunition for hunting and personal defense applications.
Winchester Big Bore: Backcountry Bear Protection Big Bore Ammunition Features Available in 10 mm Automatic, .357 Magnum, .44 Rem Mag, and .45 Colt Reliable expansion on big game and for personal defense situations Newly engineered concave hollow point Deep penetration of semi-jacketed hollow point design controls expansion Learn more about Big Bore in the attached video with Winchester's Nathan Robinson and Game & Fish Editorial Director Adam Heggenstaller at SHOT Show 2023 in Las Vegas. Learn more:
Cartridge: 10mm Automatic Bullet Weight: 200 GrainBullet Type : Jacketed Soft PointMuzzle Velocity : 1175Muzzle Energy: 613Rounds Per Box: 20Cartridge: 357 Magnum Bullet Weight : 157 GrainBullet Type : Jacketed Soft PointMuzzle Velocity : 1460Muzzle Energy : 748Rounds Per Box : 20Cartridge: 44 Remington Magnum Bullet Weight : 240 GrainBullet Type: Jacketed Soft PointMuzzle Velocity: 1485Muzzle Energy: 1175Rounds Per Box : 20Cartridge: 45 Colt Bullet Weight : 250 GrainBullet Type : Jacketed Soft PointMuzzle Velocity : 900Muzzle Energy : 450Rounds per Box : 20