Lyman Ammo Checker, Small Rifle Gauge

The Lyman Ammo Checker Small Rifle Gauge (Lyman part no. 7833001) gives handloaders a fast way to confirm a finished round will fit the chamber before it ever reaches the range. Lyman machines this gauge from a solid block of 6061 T6 aircraft-grade aluminum, cut with custom tooling to SAAMI minimum chamber dimensions, so dropping a loaded round in and checking the fit takes seconds. Bright orange anodizing keeps it easy to spot on a cluttered bench.

Key Specifications

• Multi-caliber coverage checks .204 Ruger, .22 Hornet, .223 Remington, .22-250 Remington, 300 AAC Blackout, and 7.62x39mm from one gauge.
• 6061 T6 aircraft-grade aluminum construction is machined from a solid block for durability.
• Cut to SAAMI minimum chamber dimensions so a round that fits the gauge will fit the chamber.
• 6-cartridge capacity lets handloaders check a small batch at once.
• Bright orange anodized finish makes the gauge easy to spot on the bench.
• Each caliber clearly engraved keeps multi-caliber gauges easy to identify at a glance.
• Instant pass/fail check on fully loaded rounds, not just empty brass, catching seating and crimp errors too.
• Reduces range-day malfunctions by catching oversized or improperly sized handloads before they’re fired.
• Custom-tooled cut gives each gauge chamber consistent, repeatable dimensions across the whole batch.

Frequently Asked Questions

How does this gauge work? Drop a loaded round into the gauge; if it fits, the round will fit into the gun’s chamber.

What calibers does this gauge check? It covers .204 Ruger, .22 Hornet, .223 Remington, .22-250 Remington, 300 AAC Blackout, and 7.62x39mm.

How many rounds can this gauge check at once? It holds 6 cartridges at a time.

Buy the Lyman Ammo Checker, Small Rifle Gauge

Catch chambering problems before the range. Order the case preparation supplies from our Lubbock, Texas gun shop and check every loaded round in seconds.