Hornady Crimp-On Gas Checks .338 cal 1000/Box

The Hornady Crimp-On Gas Checks .338 caliber 1000/Box delivers precision bullet casting support for reloaders who demand consistent performance downrange. These crimp-on gas checks seal the base of cast lead bullets during the sizing process, protecting them from gas leakage and base deformation under the pressure and heat of firing. For handloaders casting their own ammunition, gas checks are essential for achieving the velocity, accuracy, and shot-to-shot consistency that commercial factory loads provide.

Hornady gas checks are engineered to crimp securely onto the bullet base during the sizing stroke, creating a reliable seal that prevents hot gases from eroding the soft lead core. The .338 caliber specification matches the bore diameter of .338 Winchester Magnum, .338 Lapua Magnum, and other .338-class rifle cartridges. A 1000-round box provides sufficient inventory for extended casting sessions or long-term reloading programs. The minimal weight of 0.46 lbs reflects the small, lightweight nature of individual checks, making this a shelf-stable component for any serious bullet casting operation.

Handloaders who cast bullets for larger rifle cartridges—including magnum hunting rounds and long-range precision loads—depend on gas checks to maintain bore-safe velocities without sacrificing accuracy. Without a gas check, cast lead bullets can fail prematurely or produce inconsistent ballistics due to base erosion. Hornady's reputation in the ammunition and reloading market is built on components that meet exacting standards, and these gas checks are no exception.

Whether you are developing hunting loads, benchrest ammunition, or general practice rounds from cast bullets, proper base protection is non-negotiable. The 1000-round quantity ensures you won't run short mid-project and provides economy pricing for high-volume casters. These checks integrate seamlessly into standard sizing dies and require no special tools or techniques beyond your existing reloading press setup.