Sierra Tipped MatchKing (TMK) 175 Grain Bullet in .30 Caliber

The Sierra Tipped MatchKing (TMK) 175 grain bullet represents a pinnacle in precision projectile design, optimized for long-range metallic and semi-metallic reloading applications within the .30 caliber (7.62mm) class. Engineered for competitive marksmen and ballistic enthusiasts, this bullet features a polymer tip constructed from acetal resin, which significantly reduces aerodynamic drag and enhances the ballistic coefficient (BC), resulting in flatter trajectories and improved wind resistance at extended distances.

Key Technical Features

• Advanced Aerodynamic Profile: The polymer tipped design minimizes drag and turbulence, yielding a superior G1 ballistic coefficient that translates into enhanced downrange energy retention and precision.
• Extended Supersonic Flight: Maintains supersonic velocities beyond 1,000 yards, making it ideal for precision disciplines such as F-Class (Open Division) and dynamic 3-Gun competitions where consistent terminal performance is critical.
• Manufacturing Consistency: Produced under stringent quality control by Sierra Bullets, renowned worldwide for their uniformity and reliability in bullet weight, dimensions, and jacket integrity, ensuring repeatable accuracy in every reload.

Technical Specifications

Reloading and Usage Recommendations

To maximize the ballistic potential and terminal performance of the Sierra TMK 175 grain bullet, consider the following guidelines tailored for precision metallic and semi-metallic reloading:

1. Powder Selection and Charge Optimization: Utilize propellants capable of propelling the bullet above 2,400 feet per second to fully exploit its aerodynamic advantages and maintain supersonic stability throughout the trajectory.
2. Barrel Twist Rate: Employ barrels with a rifling twist rate of 1:10 inches or faster to ensure gyroscopic stability and consistent bullet flight, critical for long-range accuracy and precision shooting.
3. Application Scope: While this bullet excels in target shooting and competition scenarios due to its precision and ballistic efficiency, it is not recommended for big game hunting where controlled expansion and terminal energy transfer are paramount.

Additional Considerations for Hunters and Reloaders

Despite the Sierra TMK’s reputation for record-setting accuracy and ballistic performance, its design prioritizes aerodynamic efficiency over controlled expansion, rendering it less suitable for most hunting applications. For varmint or small game hunting, alternative bullet designs such as Hornet, Blitz, or Varminter projectiles with lighter jackets and controlled fragmentation may provide more reliable terminal effects.

Reloaders and ballistic specialists seeking detailed load data, pressure guidelines, and component compatibility are encouraged to consult the official Sierra Bullets resource page for the .30 Caliber 175 Grain TMK bullet.