Hornady Lock-N-Load Modified Case "A" Series .17 Hornet
The Hornady Lock-N-Load Modified Case "A" Series .17 Hornet is a precision reloading accessory engineered for shooters who demand concentricity and case alignment in their handloading process. Designed specifically to work with Hornady's Lock-N-Load Precision gauges, this modified case allows you to verify bullet seating depth and overall cartridge dimensions with the kind of accuracy that matters when you're chasing tight groups or developing loads for a specialized varmint cartridge. If you're serious about reloading .17 Hornet, this is the tool that bridges the gap between guesswork and precision.
The case modification centers on two critical improvements. A fine-thread connection ensures the case seats perfectly square on your gauge every time, eliminating the alignment errors that can throw off your measurements. The neck has been precisely opened and shaped so standard-diameter bullets slide in smoothly and concentrically—no forcing, no binding—which means your comparisons are consistent and reliable from one round to the next.
Whether you're developing match loads, working up ammunition for a custom rifle, or just refusing to settle for sloppy concentricity, this modified case becomes an essential part of your reloading bench. It's the kind of precision detail that separates handloaders who shoot groups from those who shoot strings.
Key Features
- Fine-thread attachment to Lock-N-Load Precision gauges for perfect square seating
- Precisely rounded and opened neck for concentric bullet fit
- Caliber-specific .17 Hornet design
- Enables accurate measurement of bullet seating depth and overall cartridge dimensions
Frequently Asked Questions
What gauge does this modified case work with?
This modified case is designed to work with Hornady's Lock-N-Load Precision gauges and attaches via a fine-thread connection to ensure perfect alignment.
Can I use this for any .17 Hornet rifle?
This modified case is a reloading tool used with your Lock-N-Load gauge to verify ammunition dimensions and concentricity. It isn't fired in a rifle and works universally for any .17 Hornet reloading application.
What's included?
You receive the modified .17 Hornet case ready to thread onto your Lock-N-Load gauge. The case itself is the product; the gauge is sold separately.

