Lyman Ammo Checkers are machined from solid blocks of 6061 T6 aircraft grade aluminum and cut with custom tooling to minimum chamber dimensions. Check the quality and consistency of both loaded rounds and purchased ammo. A must for any AR shooter. You can’t afford mis-feeds, so get the easiest “Go” gauge available for modern sporting rifle calibers.
• Covers 243 Win, 270 Win, 30-30 Win, 308 Win, 30-06, 300 WSM
• CNC machined to minimum chamber specs
• Confirm ammo will chamber smoothly