Hornady Lock-N-Load 6mm ARC Cartridge Gauge - Silver (Model 380719)
$20.83
$22.99
(You save
$2.16
)
- Caliber-Gauge:
- 6mm ARC
- Function:
- Ensure a Correct Fit
The Hornady Lock-N-Load 6mm ARC Cartridge Gauge is a precision measuring tool designed for reloaders who want to verify that their finished ammunition will chamber safely and reliably in SAAMI-spec firearms. Whether you're developing loads for a new 6mm ARC rifle or running production batches, this go/no-go gauge confirms case dimensions and overall cartridge fit before you fire a round downrange—catching problems before they become expensive or dangerous mistakes.
The silver-finished gauge works by simply dropping a completed round into the chamber—if it fits, your load is good. If it doesn't, you've caught an out-of-spec round before it reached your rifle. This is essential insurance for handloaders working with modern, tighter-tolerance calibers like the 6mm ARC, which can be unforgiving if headspace or case length drifts out of spec. Unlike generic calipers or guesswork, a dedicated cartridge gauge gives you objective, repeatable confidence in every round.
Part of Hornady's well-regarded Lock-N-Load system, this gauge integrates with other Hornady reloading tools if you're building a complete setup. It's compact, durable, and purpose-built for the specific dimensions of 6mm ARC ammunition—no adapters, no improvisation needed.
Key Features
- SAAMI-spec chamber verification ensures safe fit in standard firearms
- Go/no-go design catches out-of-spec loads before firing
- Purpose-designed for 6mm ARC caliber
- Compact, durable silver-finished construction
- Part of the Hornady Lock-N-Load reloading system
Specifications
| Brand | Hornady |
| Model | 380719 |
| Caliber | 6mm ARC |
| Type | Cartridge Gauge |
| Finish | Silver |
Frequently Asked Questions
What exactly does a cartridge gauge do?
A cartridge gauge verifies that a finished round will chamber properly in a SAAMI-spec firearm. You simply insert your loaded round into the gauge—if it fits, the round is within spec; if it doesn't, the load needs adjustment. This catches headspace and case-length errors before they reach your rifle.
Is this gauge specific to 6mm ARC?
Yes. This gauge is designed exclusively for 6mm ARC cartridges. It will not work with other calibers; Hornady offers Lock-N-Load gauges for other calibers as separate products.
Do I need this if I'm careful with my reloading?
A cartridge gauge adds an objective final check that calipers and eyeballing cannot provide. It's particularly valuable with modern, tight-tolerance cartridges like 6mm ARC, where small variations in headspace or case length can cause chambering problems or unsafe pressure. Many reloaders consider it essential insurance.
Will this work with the rest of my Hornady reloading equipment?
Yes, this gauge is part of the Hornady Lock-N-Load system and is designed to integrate with other Lock-N-Load reloading tools and accessories.
