Top 6 300 Blackout Case Gauge – Gunsmithing Tools

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1. Lyman

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Lyman Products MSR Ammo Checker Block

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Lyman #ad - 100% proudly made in the USA. Covers 223/5. 56, 7. 62x39, 300aac blackout, 6. 8 rem. Cnc machined to minimum chamber Specs. Confirm if ammo will chamber smoothly. Spc, 6. 5 grendel, 450 bushmaster, 458 SOCOM and 50 Beowulf.
BrandLyman #ad
ManufacturerLyman Products #ad
Weight0.74 Pounds
Part Number7833003
Model7833003

2. Lyman

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Lyman Products Small Rifle Ammo Checker

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Lyman #ad - Machined to minimum SAAMI specs. 204 ruger, 223 rem, 22 hornet, 22-250, 300 aac Blackout and 7.62x39mm. Made from solid block of 6061 T6 aircraft grade aluminum. If round fits flush it will chamber.
BrandLyman #ad
ManufacturerLyman Products #ad
Height2 Inches
Length8.75 Inches
Weight2 Pounds
Width3.75 Inches
Part Number7833001
Model7833001

3. Lyman

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Orange, Lyman Ammo Checker Single Caliber.300 Win Mag

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Lyman #ad - Peace of mind - verify the quality and consistency of both reloaded and factory ammo. Precise - cut with custom tooling to SAAMI minimum chamber dimensions. Buy without fear because we have your back. Warranty - we stand behind our product with a 1 year Warranty. Easy to use - just drop your cartridge into the gauge and if it fits, it will chamber into your gun. Durable - machined from solid 6061 T6 aircraft grade aluminum.
BrandLyman #ad
ManufacturerLyman Products #ad
Height1.5 Inches
Length4.69 Inches
Weight0.24 Pounds
Width3.46 Inches
Part Number7833015
Model7833015

4. Hornady

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Hornady A300A Lock-N-Load 300 Blackout AAC/Whisper Caliber Modified Case

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Hornady #ad - Type: bullet Case. Threaded primer pocket to fit the lnl overall length gauges. Readily available for most popular rifle chambers. Manufactured to SAAMI specs. Each case is hand-inspected. Modified case, 300 AAC/Whisper.
BrandHornady #ad
ManufacturerHornady #ad
Height1 Inches
Length6 Inches
Weight1 Pounds
Width2 Inches
Part NumberA300A
ModelA300A

5. Little Crow Gunworks

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Little Crow Gunworks Worlds Finest Trimmer 300 B/O

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Little Crow Gunworks #ad - Does not use pilots, the case is supported by the shoulder and case body. Works with a cordless or electric drill. Trims at least 10 cases per minute.
BrandLittle Crow Gunworks #ad
ManufacturerLittle Crow Gunworks LLC #ad
Part NumberLCG-WFT-300-Blackout

6. Lee Precision Reloading

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Small, Lee Precision Reloading Gauge/Holder 300 AAC Blackout Lee Precision Gauge/Holder 300 AAC Blackout, Silver

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Lee Precision Reloading #ad - Made in USA. Used with the cutter and lock stud or zip trim. Easy way to trim to length and square the case Mouth. Trim to length 1. 348 to 1. 368 inches. 300 aac blackout case length Gauge.
BrandLee Precision Reloading #ad
ManufacturerACK LLC #ad
Height0.5 Inches
Length5 Inches
Width3.8 Inches
Part Number90443
Model90443