Hornady Lock-N-Load 17 Hornet Modified Case & Adapter D
S118424
- Reloading measurement tool — measures bullet seating depth relative to the rifling lands in your rifle chamber
- Includes both Modified Case and Adapter D, covering the 17 Hornet calibre
- Threaded case neck accepts the Hornady Lock-N-Load OAL Gauge (sold separately)
- Manufactured to SAAMI specifications for consistent, repeatable measurements
- Lets you find the maximum cartridge overall length (OAL) for your specific chamber
- Essential for precision handloaders working up loads in 17 Hornet rifles
- One modified case per calibre — not interchangeable between calibres
The Hornady Lock-N-Load Modified Case for 17 Hornet is a precision reloading measurement tool — not ammunition. This pack contains both the Modified Case and Adapter D, giving 17 Hornet handloaders everything needed to use the Lock-N-Load Overall Length (OAL) Gauge. The case is manufactured to SAAMI specifications and has a threaded neck that accepts the LNL OAL Gauge (sold separately). Once assembled, you seat a bullet into the modified case, chamber it in your own rifle, and the gauge records the precise distance from the cartridge head to the rifling lands. That measurement lets you set your seating die to seat bullets at exactly the depth you want — critical for accuracy work and for avoiding dangerous over-pressure from bullets jammed hard into the rifling. Because chamber dimensions vary between individual rifles, these measurements must be taken in your own rifle; that is what makes this tool genuinely useful. One modified case per calibre is required.
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