The Sierra Cal 55gr HPBT GameKing is a match grade hunting bullet that has earned a loyal following among .224 shooters. This is the same bullet used in Federal Tactical Urban Rifle ammunition, load number 9375, which tells you plenty about its consistency. These are brand new projectiles for reloading, bulk packaged so the savings pass straight to you. If you build 223 Remington or 5.56 loads for varmints, predators, or duty style practice, this is a proven component.
What the Sierra Cal 55gr HPBT GameKing is
The Sierra Cal 55gr HPBT GameKing measures .224 inches in diameter and weighs 55 grains, the most popular weight in the caliber. HPBT stands for hollow point boat tail, a design that pairs a small hollow point with a tapered rear to improve the ballistic coefficient and downrange consistency. The boat tail base also makes the bullet easier to seat and helps it track truer at distance.
This bullet is built for handloaders who want factory grade performance without paying factory prices. It suits varmint hunters, predator callers, and high volume range shooters who feed AR-15 rifles and bolt guns chambered in 223 Remington. Sierra developed the projectile with duty use in mind, so it delivers strong expansion without excessive over penetration.
Key features of the GameKing bullet
- Same bullet used in Federal TRU 223 Remington ammunition
- Hollow point boat tail profile for a high ballistic coefficient
- Standard .224 inch diameter for 223 Remington and 5.56
- Popular 55 grain weight with wide load data support
- Brand new bullets, bulk packaged to lower your cost
- Sold in convenient 500 count quantities
Specifications and performance
The grain weight is 55 gr and the profile is a hollow point boat tail. At .224 inches, it matches the standard bore of the 22 caliber centerfire family. The 55 grain weight stabilizes in the common 1 in 12, 1 in 9, and 1 in 8 twist barrels found on most 223 and 5.56 rifles.
Because the GameKing line holds tight tolerances, you get uniform bearing surfaces and consistent seating depth, which shows up as tighter groups on paper. The controlled expansion opens reliably on light framed game while resisting the fragmentation that can plague thinner varmint bullets. That balance is exactly why the same projectile was chosen for a duty oriented factory load.
Reloading, care, and compatibility
Work up your load from published data, matching powder and primer to your barrel and twist rate. Start below maximum and increase in small steps while watching for pressure signs and your chronograph numbers. Keep the bullets in a dry container so the jackets stay bright and free of corrosion.
These bullets seat with any standard .224 die and feed cleanly from AR-15 and bolt action magazines. To read more about the GameKing line straight from the maker, visit Sierra, then round out your bench from our reloading and gear collection.
The 223 and 5.56 platform
The 22 caliber centerfire family is the most popular sporting platform in America, built around the 223 Remington and its military sibling the 5.56 NATO. Rifles range from lightweight bolt guns to the ubiquitous AR-15, and nearly all of them shoot a 55 grain bullet extremely well. That is a big part of why this weight has stayed the standard for decades.
Barrel twist is worth understanding here. A 55 grain bullet stabilizes easily in almost any modern twist rate, which makes it forgiving for new handloaders and reliable across a wide fleet of rifles. You can load these for prairie dogs at first light and steel plates in the afternoon without changing a thing.
Buying in bulk is how serious 223 shooters keep their costs down. A 500 count supply of quality bullets loads a lot of ammunition, and it lets you develop a proven recipe you can return to again and again. Kept dry, these bullets will wait patiently until your next loading session.
Stock the Sierra Cal 55gr HPBT GameKing deep and keep your 223 Remington loads consistent all season long. Ships direct to your door, no FFL required.
Reviews
There are no reviews yet.