Sierra BlitzKing 22 Cal 40 Grain Flat Base Bullets (224 Diameter) - Precision Ammunition Components

The Sierra BlitzKing 22 Cal 40 Grain Flat Base Bullets (224 diameter) are purpose-built rifle reloading components designed for precision varmint and small-game shooting. If you reload for .224 caliber rifles—whether it's a .223 Remington, .222 Rem, or similar cartridge—these bullets deliver the accuracy consistency you expect from Sierra's MatchKing line combined with explosive terminal performance on light game. The 40-grain bullet weight makes it ideal for high-velocity loads, and Sierra engineered these with thin jackets and a proprietary polymer tip to balance expansion with accuracy downrange.

What sets BlitzKing bullets apart from standard varmint rounds is Sierra's attention to ballistic precision. These aren't just thin-jacketed explosive bullets; they're manufactured to the same tolerances that made MatchKing rounds synonymous with accuracy. The flat-base design keeps reloading straightforward and consistent, and the 224 diameter (.224") ensures reliable chambering across standard .22 centerfire platforms. Shooters working up loads for .223 target matches, prairie dog runs, or predator calls will find these bullets respond to careful powder and primer selection with tight groups and reliable expansion.

Sierra's reputation in precision ammunition stems from decades of factory and reloading market experience. BlitzKing bullets let handloaders dial in the exact velocity and powder charge their rifle prefers, achieving the terminal performance these bullets were designed for. Muzzle velocity capability reaches up to 4400 fps in the lighter 20- and 22-caliber BlitzKing weights, giving you substantial latitude in load development for different barrel lengths and platforms.

Key Features

• Thin jacket design promotes controlled expansion and terminal performance
• Proprietary polymer tip engineered for accuracy and rapid expansion
• Flat-base configuration for consistent feeding and straightforward reloading
• Manufactured to precision tolerances characteristic of Sierra MatchKing bullets
• Suited for muzzle velocities up to 4400 fps
• Ideal for .224 caliber platforms (.223 Rem, .222 Rem, and similar cartridges)

Specifications

Frequently Asked Questions

What .224 caliber rifles will these bullets work in?

Sierra BlitzKing 40-grain bullets in .224 diameter (.224") are compatible with standard .224 centerfire platforms, including .223 Remington, .222 Remington, and similar cartridges that chamber .224" diameter projectiles. Always verify your rifle's chamber specifications and consult reloading references specific to your cartridge before beginning load development.

What is the maximum safe muzzle velocity for these bullets?

Sierra rates the 40-grain BlitzKing bullets in 22 caliber for muzzle velocities up to 4400 fps. Working loads within this velocity range helps ensure the jacket and tip function as designed. Consult published reloading data for your specific powder, primer, and cartridge combination.

Are these bullets suitable for long-range target shooting?

BlitzKing bullets are designed primarily for varmint and small-game hunting, where rapid, reliable expansion is desired. For precision target shooting at extended distance, Sierra's MatchKing line may be better suited. For specific applications, refer to Sierra's load data and recommendations.

What does "flat base" mean and why does it matter?

A flat-base bullet has a flat bottom surface (as opposed to a boat-tail design). Flat-base bullets are generally easier and more forgiving to reload, offer consistent feeding in most magazine systems, and simplify the reloading process for handloaders. They work well in traditional rifle magazines and single-feed systems.