The Lyman Ammo Checker Single Calibre 300 Aac Blackout (Model: LY-AC300BO) is a precision-machined diagnostic tool designed to verify the dimensional consistency of your ammunition. For Australian shooters and reloaders working with the popular .300 AAC Blackout cartridge, ensuring that hand-loads or factory ammunition chamber correctly is vital for both safety and performance. This single-calibre gauge is cut to the strict minimum chamber dimensions set by the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI). By dropping a loaded round into the gauge, you can instantly determine if the cartridge will chamber smoothly in your firearm. This simple, mechanical quality-control step helps prevent feeding failures, stuck cases, and potential chambering malfunctions before you head out to the range or the field.

Key Features:

  • Precision Go/No-Go Gauging: Provides an instant visual and tactile confirmation of whether a cartridge meets SAAMI minimum chamber specifications.
  • Calibre-Specific Accuracy: Custom-machined specifically for the .300 AAC Blackout calibre, ensuring precise fitment checks without the variance of multi-calibre blocks.
  • Improves Firearm Safety: Helps identify oversized cases, improperly seated projectiles, incorrect overall lengths, or insufficient crimps before the ammunition is chambered.
  • Durable Construction: Crafted by Lyman, a brand recognised by members of the Sporting Shooters' Association of Australia (SSAA) for manufacturing durable, long-lasting reloading equipment.
  • No-Power Operation: This mechanical gauge requires no batteries, calibration, or external power sources, making it a reliable addition to any mobile reloading kit or permanent workbench.

Specifications:

  • Brand: Lyman
  • Model Number: LY-AC300BO
  • Compatible Calibre: .300 AAC Blackout (also known as 300 BLK)
  • Measurement Standard: SAAMI Minimum Chamber Dimensions
  • Power Requirements: None (Mechanical tool)
  • Material: Solid metal alloy for wear resistance and longevity

Who It Is For:

The Lyman Ammo Checker Single Calibre 300 Aac Blackout is designed for dedicated reloaders, target shooters, and hunters in Australia who rely on the .300 AAC Blackout cartridge. Whether you are prepping high-volume ammunition for competitive shooting matches or carefully crafting hunting loads, this tool is essential for maintaining strict quality control. It is highly recommended for members of local shooting clubs and the SSAA who require absolute reliability from their hand-loaded ammunition. If you want to eliminate the risk of chambering jams and ensure your ammunition performs consistently under all conditions, this Lyman gauge is a necessary addition to your reloading bench setup.

SKU LY38150LP
Model # LY-AC300BO
Brand Lyman
Shipping Weight 1.0000kg

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