Sierra Bullets Sports Master 10mm .400 180gr JHP - 100 Count

The Sierra Sports Master line of handgun projectiles is one of the most respected names in reloading, and this 100-count box of 10mm/.400 bullets delivers the dependable performance handloaders have trusted since this load was introduced in 1988. Each bullet is a precisely swaged 180-grain jacketed hollow point (JHP) engineered for consistent, reliable expansion across a wide range of velocities, making it a versatile choice for hunting, personal defense, and target practice loads chambered for the 10mm Auto and other .400-inch handgun cartridges.

Sierra builds these JHPs around a 0.400-inch diameter lead core wrapped in a serrated copper power jacket. The jacket is scored to promote uniform, controlled expansion on impact, while the hollow-point cavity and overall geometry are tuned for accuracy out of both standard and longer-barrel handguns. Whether you are assembling a defensive carry load for a 10mm pistol or building hunting ammunition for a compatible carbine, these projectiles seat, feed, and shoot with the lot-to-lot uniformity Sierra is known for.

This 100-count box is intended for handloaders reloading 10mm Auto and compatible .40-caliber cartridges that take a 0.400-inch diameter projectile. Each bullet is dimensionally consistent, giving reloaders the predictable performance both competitive and defensive handloaders depend on.