Hornady Lock-N-Load Modified Case 6mm ARC Brass Cartridge

The Hornady Lock-N-Load Modified Case in 6mm ARC provides precision reloaders with the exact measurement tool needed for optimal cartridge overall length (COAL) determination. This modified brass case enables accurate bullet seating depth calculations when used with the Hornady Lock-N-Load Overall Length Gauge, eliminating guesswork in load development.

What Makes This Different

Unlike standard fired brass, this modified case features precisely machined specifications that ensure consistent measurements every time. The case body maintains factory dimensions while the modified design allows the Overall Length Gauge to function properly. This eliminates the variables introduced by using fired brass from different chambers, providing repeatable measurements that translate directly to improved accuracy.

Key Features

• Factory-fresh 6mm ARC brass case with precise modifications for measurement consistency
• Compatible with Hornady Lock-N-Load Overall Length Gauge (sold separately)
• Eliminates chamber-to-chamber variations found in fired brass measurements
• Enables precise bullet seating depth determination for optimal accuracy
• Manufactured to exact SAAMI specifications for 6mm ARC chamber dimensions
• Single case design allows multiple measurements without brass degradation
• Works with all common 6mm ARC bullet weights and profiles

Precision shooters and competitive reloaders rely on exact cartridge dimensions to achieve consistent accuracy. This modified case removes the uncertainty of using fired brass that may have stretched or deformed during firing. The tool proves especially valuable when developing loads for different bullet weights or when switching between rifles with varying chamber dimensions. Match shooters report improved group consistency when loads are developed using proper COAL measurements.

Technical Specs

• Caliber: 6mm Advanced Rifle Cartridge (6mm ARC)
• Case material: High-quality brass construction
• Modification: Precision-machined for Lock-N-Load gauge compatibility
• SAAMI specification compliance for accurate measurements
• Compatible with all 6mm ARC chamber specifications
• Requires Hornady Lock-N-Load Overall Length Gauge for operation
• Country of origin: United States

Serious reloaders understand that consistent ammunition starts with precise measurements. This modified case provides the foundation for developing accurate loads tailored to specific rifles and shooting applications, making it an essential tool for anyone serious about 6mm ARC performance.