The Lyman Ammo Checker in .223 Remington (Lyman part no. 7833020) is machined from solid aluminum to SAAMI minimum chamber tolerances, giving reloaders a simple pass/fail check on both reloaded and factory ammunition. Drop a cartridge into the gauge, and if it fits, it will chamber in the rifle; if it does not, the round needs attention before it is fired. This aluminum version is a lighter-weight alternative to steel checkers, built for the same job of catching oversized cases or seating errors before they cause a malfunction at the range.

Key Specifications

• Gauges ammunition to .223 Remington chamber dimensions.
• Machined from solid aluminum.
• Cut with custom tooling to SAAMI minimum chamber tolerances.
• Checks both reloaded and factory ammunition.
• Uses a simple drop-in test: no calipers or measuring tools required.

Frequently Asked Questions

How do I use this ammo checker? Drop a cartridge into the gauge; if it fits, it will chamber in your rifle.

Is this gauge steel or aluminum? It is machined from solid aluminum, a lighter alternative to steel gauges of the same function.

Buy the Lyman Ammo Checker .223 Remington, Aluminum

Check every .223 Remington round against SAAMI minimum tolerances before you load a magazine. Order from Lyman through our case preparation lineup, with fast shipping from our Lubbock, Texas gun shop.