Thor Bullets
Thor™ Bullets Sizing Pack
Thor™ Bullets Sizing Pack
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The Thor™ Hammer Sizing Pack is designed for you to size your bore diameter before you place your bullet order. This ensures the truest fit and best accuracy.
The Thor™ Bullets are high performance, full-bore muzzleloading bullets. The .50 caliber ballistic tip bullets feature a 100% copper construction and are manufactured by Barnes™ using their X Bullet® platform along with their proven expansion technology. The Thor™ Bullet is proven to be extremely accurate at long ranges, while providing lethal expansion on deer and elk-sized game.
The Thor™ Bullet's hollow base expands when the powder goes off, both gripping the rifling and sealing the bore. These bullets actually shoot 75-100 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 Thor™ Bullet is the way to go.
**** Before purchasing your first pack of Thor™ Bullets, you will 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. In the event that the .500 is too tight for your bore, then the .499 bullet will work perfect! Keep in mind that the .499 bullets are only available here on Thorbullets.com via custom order.
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), you have found the correct size for your rifle.

Engineered to be Better!
Thor bullets are the industry leader in terminal performance and weight retention. Our bullets feature a true copper gas seal to ensure a precision fit to your barrel.
Relatively inexpensive way to learn that my new CVA Accura barrel is .505. Too large for the .500 bullet yet too small for the .501. Thor rep was good explaining that occasionally the barrels are between Thor bullet size options.
sizing pack was
Mine was .500 cva v2
Was able to order some that size and they
Work well
Still working on getting a good pattern
Shooting 245 gr now
Going to move up to 300gr
Will see
I received my test kit very quick and they were easy to use.
Interesting idea to get correct size bulletin. Worked quite well.
I will definitely will buy some bullets but my gun is brand new and I want to shoot some bullets before I size. Brand new barrel is at .500 right now