Lyman Large Rifle Cartridge Checker

The Lyman Large Rifle Cartridge Checker (brand part no. 7833002) is a drop-in go/no-go gauge that confirms a loaded round will fit a firearm’s chamber before you take it to the range. Made by Lyman, it’s machined from aircraft-grade aluminum and cut to SAAMI minimum chamber dimensions for a reliable pass/fail check.

Key Specifications

• Machined from solid 6061 T6 aircraft-grade aluminum.
• Cut with custom tooling to SAAMI minimum chamber dimensions for an accurate go/no-go check.
• Finished in bright orange anodizing to make it easy to spot on the bench.
• One gauge checks six popular cartridges: .243 Winchester, .270 Winchester, .30-30 Winchester, .308 Winchester, .30-06 Springfield, and .300 Winchester Short Magnum.
• Each supported caliber is engraved on the gauge for quick reference.
• Simple drop-in check: if a loaded round fits the gauge, it will fit the gun’s chamber.
• Compact at roughly 6.65 inches, easy to keep in a range bag.

Frequently Asked Questions

How does this gauge work? Drop a loaded round into the gauge — if it fits, the round will also fit the corresponding chamber.

Which cartridges does the Large Rifle gauge check? This gauge checks .243 Winchester, .270 Winchester, .30-30 Winchester, .308 Winchester, .30-06 Springfield, and .300 Winchester Short Magnum.

Buy the Lyman Large Rifle Cartridge Checker

Order the Lyman Large Rifle Cartridge Checker from our Lubbock, Texas gun shop for your case prep equipment bench.