The Lyman Pro Single Ammo Checker (Lyman part no. 7705202) is machined for .308 Winchester/7.62 NATO, letting reloaders confirm a round will chamber cleanly before it ever reaches a rifle. Drop a loaded cartridge into the gauge; if it seats flush, the round is within SAAMI chamber tolerances, and if it does not, that round can be pulled before it causes a jam or feeding issue at the range. Precision rifle shooters running .308/7.62 loads through gas guns and bolt actions alike use this checker to keep every round consistent batch to batch.

Key Specifications

• Gauges ammunition to .308 Winchester/7.62 NATO chamber specifications.
• Checks both reloaded and factory ammunition.
• Verifies fit against SAAMI chamber tolerances.
• Ships at approximately 0.37 lb.
• Uses a simple drop-in test: no calipers or measuring tools required to check a round.

Frequently Asked Questions

Does this checker work for both .308 Win and 7.62 NATO? Yes, the two share chamber dimensions close enough for this gauge to check both.

How is a round tested with this gauge? Drop it in; if it seats flush the round is within SAAMI chamber tolerances.

Buy the Lyman Pro Single Ammo Checker .308/7.62 NATO

Verify every .308/7.62 NATO round before it goes into the rifle. Order from Lyman through our reloading tools lineup, with fast shipping from our Lubbock, Texas gun shop.