Hornady 416 Caliber Gas Checks 1,000/Box

If you're casting your own bullets for .416-caliber firearms, Hornady 416 Caliber Gas Checks are a foundational tool for producing reliable, consistent ammunition. Gas checks crimp onto the base of cast lead bullets during the sizing process, creating a seal that protects the bullet base from gas erosion and deformation—critical for accuracy and performance downrange. Whether you're loading for a .416 Rigby, .416 Weatherby, or another .416 cartridge, these checks help your cast bullets perform like commercially manufactured rounds.

Bullet casting opens the door to economical, customizable reloading, but it introduces variables that jacketed bullets don't have. The lead base of a cast bullet is exposed to the intense heat and pressure of the powder charge, which can erode or flatten the base if left unsealed. A gas check solves that problem by forming a protective barrier, allowing you to push cast bullets to velocities and accuracy levels you'd otherwise sacrifice.

Hornady's gas checks are designed to work reliably in standard sizing dies and require only a crimp-on installation—no special tooling beyond what most reloaders already have. The 1,000-count box gives you enough checks for a serious casting session or an entire season of handloading, depending on your volume.

Key Features

• Sized specifically for .416-caliber cast bullets
• Crimps securely to bullet base during sizing
• Seals base to prevent gas erosion and deformation
• 1,000 checks per box for high-volume casters
• Compatible with standard reloading dies

Specifications

Frequently Asked Questions

Do these gas checks work with my .416 Rigby or .416 Weatherby loads?

Yes. These are .416-caliber gas checks, so they're sized for any .416-cartridge cast bullets you're producing, including .416 Rigby, .416 Weatherby Magnum, and other .416 rounds.

How do I install gas checks on my cast bullets?

Gas checks crimp onto the base of your cast bullets during the sizing process using your standard bullet sizing die. No special tools are required beyond what you already use for sizing.

Why do I need gas checks on cast bullets?

Gas checks seal the lead base of cast bullets, protecting them from erosion and deformation caused by hot powder gases. This allows cast bullets to achieve better accuracy and higher velocity without damage, similar to jacketed bullet performance.

How many loads will 1,000 gas checks support?

One box contains 1,000 checks, so it will support 1,000 cast bullets. Your usage depends on how many rounds you cast per session and over a season.