The Thor™ Bullet produced by OPG Gun Ventures is a patented, full bore diameter, bullet conical that is bore size specific. The .50 caliber, ballistic tip, Thor™ Bullet is Colorado legal, which has some of harshest regulations for muzzleloader projectiles. With 100% copper construction, the bullet is also certified legal non-lead in California. The Thor™ Bullets are built on a limited basis, and are manufactured by Barnes™ using their X Bullet® Technology of all copper construction with expansion technology of an integrated expansion ring specifically designed for loading and accuracy. The Thor™ Bullet is proven to be extremely accurate at longer ranges, while providing lethal expansion on deer and elk-sized game.
The Thor™ Bullets are a premium Barnes bullet with proven technology. The bullet’s hollow base expands when the powder goes off, both gripping the rifling and sealing the bore. These bullets actually shoot 75-100 grain FPS faster than a Powerbelt due to their superb sealing power. If it is a quality conical you are looking for that won’t fragment into a million pieces, the conical, 300 grain Thor™ Bullet is the way to go.
**** Before purchasing your first pack of Thor™ Bullets, you first need to order a test sizing pack of 4 bullets of diameters of .500”, .501”. .502” and .503” that allows you to correctly size your bore. It is important that you start with the smallest diameter Thor™ Bullet, and work your way up in diameter size until you find the proper fitting Thor™ Bullet for your muzzleloader. While manufacturers have similar bore diameters, they will vary .001”-.002" from gun to gun, so it is extremely important to correctly size your bore to determine which diameter works best for you.
To determine which bullet is best for your muzzleloader, start with an empty rifle, remove the breechplug and slide in the .500 bullet. If it slips easily down the bore, you then try the .501 and so on. When you find the diameter that requires about 20/30 ft./lbs. of force to push down the barrel (that is comparable to the resistance you get loading a standard sabot bullet), then that’s the correct size for your rifle.