Sierra 20 Cal 39gr BlitzKing

Sierra 20 Cal 39gr BlitzKing

The Sierra 20 Cal 39gr BlitzKing is a precision-engineered bullet component designed for handloading small-caliber rifles. This flat-base, polymer-tipped bullet combines varmint-grade terminal performance with match-grade accuracy, delivering explosive expansion on small game while maintaining tight group potential. As a bullet—not loaded ammunition—it’s optimized for high-velocity platforms like .204 rifles.

At 39gr, the 20 Cal 39gr BlitzKing features a lightweight construction and a thin copper jacket that promotes rapid expansion upon impact. The proprietary green acetyl resin tip initiates reliable mushrooming, ideal for humane varmint control. Despite its lightweight, it retains exceptional accuracy characteristics—drawing on Sierra’s renowned MatchKing design—to support sub-MOA consistency at typical varmint ranges.

Ballistic data confirms the 20 Cal 39gr BlitzKing exhibits a sectional density around 0.134 and a G1 ballistic coefficient near 0.287 at velocities above 3,600 fps, tapering with lower velocity ranges. This ensures a flat trajectory and reliable wind resistance in the high-speed .204‑caliber realm—vital for precision in field scenarios.

The 20 Cal 39gr BlitzKing is compatible with bolt-action and AR-platform .204 calibers, performing best in 1‑in‑12″ twist barrels and similar configurations. Its fine consistency in weight and overall length facilitates straightforward load development, and experienced reloaders report repeatable one‑hole 5‑shot groups at 100 yds with minimal tuning.

Intended for varmint hunting and accuracy-focused shooting, the 20 Cal 39gr BlitzKing excels on prairie dogs, ground squirrels, and other small game. With velocities reaching up to 4,400 fps, it ensures bone-crushing expansion while mitigating ricochet risks—a combination many users describe as “bomb-like terminal performance with match-grade accuracy.”