
Availability: In Stock
The Lee Precision Case Length Gauge for .300 AAC Blackout is an essential tool for handloaders who want consistent, accurate brass preparation. Whether you're building subsonic hunting loads or match-grade ammunition, keeping your cases trimmed to proper length is fundamental to reliable feeding, consistent powder charge geometry, and safe pressure curves. This gauge and its matching shell holder give you a straightforward way to identify cases that need trimming and hold them securely during the trimming process.
Built from hardened steel and precision-machined to SAAMI specifications, the gauge is designed to withstand years of regular use without wear or drift. The shell holder keeps your .300 Blackout brass stable and square while you're working with your Lee Case Trimmer Cutter, eliminating the guesswork from case length management. For reloaders working in intermediate rifle calibers—especially those who push the limits of subsonic loads—proper case conditioning is where accuracy starts.
Lee's straightforward approach means you get a tool that does one job exceptionally well: helping you trim brass to spec without unnecessary complexity or expense. If you're already set up with Lee reloading equipment or building a new handload bench, this gauge integrates seamlessly into your workflow.
| Caliber | .300 AAC Blackout |
| Manufacturer | Lee Precision |
| Model Number | 90443 |
| Material | Hardened Steel |
| Includes | Case Length Gauge and Shell Holder |
The set includes both the case length gauge and a shell holder matched to .300 AAC Blackout specifications. The shell holder holds your brass securely in place while you're trimming.
Yes. The gauge and shell holder are designed to work together with Lee Case Trimmer Cutter equipment to hold cases steady during the trimming and mouth-squaring operation.
This gauge (model 90443) is caliber-specific and designed for .300 AAC Blackout. Lee produces separate gauges and shell holders for other cartridges.
Hardened steel resists wear over thousands of use cycles, maintaining dimensional accuracy so your case trimming stays consistent. This helps you hold tighter tolerances on case length and ensures reliable pressure curves and feeding.

SKU: 115803248 • Width: 2.4in • Height: 0.2in • Depth: 3in • Weight: 0.08oz





Availability: In Stock
The Lee Precision Case Length Gauge for .300 AAC Blackout is an essential tool for handloaders who want consistent, accurate brass preparation. Whether you're building subsonic hunting loads or match-grade ammunition, keeping your cases trimmed to proper length is fundamental to reliable feeding, consistent powder charge geometry, and safe pressure curves. This gauge and its matching shell holder give you a straightforward way to identify cases that need trimming and hold them securely during the trimming process.
Built from hardened steel and precision-machined to SAAMI specifications, the gauge is designed to withstand years of regular use without wear or drift. The shell holder keeps your .300 Blackout brass stable and square while you're working with your Lee Case Trimmer Cutter, eliminating the guesswork from case length management. For reloaders working in intermediate rifle calibers—especially those who push the limits of subsonic loads—proper case conditioning is where accuracy starts.
Lee's straightforward approach means you get a tool that does one job exceptionally well: helping you trim brass to spec without unnecessary complexity or expense. If you're already set up with Lee reloading equipment or building a new handload bench, this gauge integrates seamlessly into your workflow.
| Caliber | .300 AAC Blackout |
| Manufacturer | Lee Precision |
| Model Number | 90443 |
| Material | Hardened Steel |
| Includes | Case Length Gauge and Shell Holder |
The set includes both the case length gauge and a shell holder matched to .300 AAC Blackout specifications. The shell holder holds your brass securely in place while you're trimming.
Yes. The gauge and shell holder are designed to work together with Lee Case Trimmer Cutter equipment to hold cases steady during the trimming and mouth-squaring operation.
This gauge (model 90443) is caliber-specific and designed for .300 AAC Blackout. Lee produces separate gauges and shell holders for other cartridges.
Hardened steel resists wear over thousands of use cycles, maintaining dimensional accuracy so your case trimming stays consistent. This helps you hold tighter tolerances on case length and ensures reliable pressure curves and feeding.
SKU: 115803248 • Width: 2.4in • Height: 0.2in • Depth: 3in • Weight: 0.08oz
