The Sierra GameChanger 223 Remington 64 grain ammunition delivers the kind of field-ready performance that works across a range of hunting and shooting scenarios. Built on Sierra's reputation for precision bullets, this load pairs their polymer-tipped GameKing bullet with Sierra brass—a straightforward, no-nonsense choice for hunters and shooters who value consistency and reliability in the field. At 64 grains, this bullet weight hits a practical sweet spot for varmint hunting, predator control, and medium-range rifle work in the .223 platform.
What makes this ammunition stand out is the GameKing bullet itself. The polymer tip aids in reliable expansion while the boattail design supports downrange energy retention and accuracy. You get factory ammunition that's ready to load and shoot, with Sierra's brass casings bearing the brand headstamp—a detail that matters if you reload or simply want to track your ammunition source. Muzzle velocity runs 3015 feet per second, generating 1291 foot-pounds of muzzle energy, figures that reflect the balanced engineering Sierra built into this load.
Whether you're zeroing a new rifle, heading out for predator season, or running drills at an outdoor range, the GameChanger rounds give you a familiar, dependable platform to work with. Sierra has positioned this ammunition as an all-around performer, and the specs back that up—nothing flashy, nothing gimmicky, just solid engineering in a box of 20.
| Caliber | 223 Remington |
| Bullet Type | Tipped GameKing (Polymer-Tipped Boattail) |
| Bullet Weight | 64 grains |
| Muzzle Velocity | 3015 feet per second |
| Muzzle Energy | 1291 foot-pounds |
| Rounds Per Box | 20 |
| Casing | Sierra Brass |
The GameChanger load uses Sierra's polymer-tipped GameKing bullet—a boattail design that combines the tip for reliable expansion with the tapered rear end to improve ballistic efficiency and accuracy downrange.
The 64-grain GameChanger load works well for varmint hunting, predator control, and general-purpose rifle shooting in the .223 Remington. The velocity and energy figures support medium-range accuracy and consistent performance.
The ammunition uses Sierra brass casing with the Sierra headstamp. We recommend consulting Sierra's reloading guidelines and data if you plan to reload—we cannot advise on reloading practices or safety.
Each box contains 20 rounds of factory-loaded Sierra GameChanger ammunition.
Ammunition Restrictions:
You must be 18 years or older to purchase shotgun or rifle ammunition, and 21 years or older for handgun ammunition. All ammunition must be shipped via Domestic Ground, and shipping is not available for international residents. Residents of CA, DC, IL, MA, NY, CT, and NJ may be subject to additional restrictions. Always ensure you use the appropriate ammunition for your firearms, and check your state and local laws for any other relevant regulations on firearms and ammunition. Due to Department of Transportation regulations, returns on ammo cannot be accepted. Please verify local laws before placing an order.
We are unable to ship ammunition to the following:
Illinois residents must provide a copy of a valid FOID Card or Valid Concealed Carry License, along with their IL driver’s license or IL state identification card to purchase ammunition. The ammunition can only be shipped to an address listed on either of those two documents.
Email: [email protected]
SIERRA BULLETS
SIERRA BULLETS
SIERRA BULLETS
