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Hornady Lock N Load Cartridge Headspace Gauge Bushing #HK55

$85.00 incl GST

Hornady Reloading Components & Accessories: Provide Consistency and Precision

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10233

Hornady, Reloading, Accessories

Specifications

brand: hornady
equipment: bullet comparator

Description

Hornady Lock N Load Cartridge Headspace Gauge Bushing #HK55

The Lock-N-Load Headspace Comparator extends brass life, improves accuracy, and enhances safety. The gauge measures variations in brass before and after firing or re-sizing. It allows for headspace comparison between fire-formed brass and re-sized brass.
 

Best Suited For

  • Reloaders working with bottleneck rifle cartridges
  • Precision and long-range shooters
  • Reloaders aiming to maximize brass life
  • Users of Hornady Lock-N-Load comparator systems
  • Anyone setting up full-length sizing dies accurately

📌 Ideal for reloaders who want repeatable, measurable shoulder bump control.

When To Use It

  • When setting up full-length sizing dies
  • To measure fired vs resized brass headspace
  • During load development and case prep
  • When trying to extend brass life and avoid over-sizing
  • When diagnosing chamber fit or feeding issues

📌 Typically used with calipers during the sizing process.

Technical Information

  • Product Code: HK55
  • Type: Headspace comparator bushing set
  • Material: Precision-machined metal
  • Compatibility:
    • Hornady Lock-N-Load Headspace Comparator body
    • Attaches to calipers via comparator system
  • Included Bushings (5 pcs):
    • .330" (A)
    • .350" (B)
    • .375" (C)
    • .400" (D)
    • .420" (E)

🔑 Key Features

  • Measures case head-to-shoulder datum length
  • Covers cartridges from .17 caliber to belted magnums
  • Helps improve accuracy, safety, and brass longevity
  • Allows precise die adjustment for minimal shoulder bump
  • Interchangeable bushings for multi-caliber use

FAQs

1. What does this tool measure exactly?

It measures the distance from the case head to a reference point on the shoulder (datum line) for consistent resizing.

2. Why is headspace measurement important?

Proper headspace ensures:

  • Safe chambering
  • Reliable feeding
  • Longer brass life
  • Consistent accuracy

3. Do I need all five bushings?

Yes, the set covers different cartridge shoulder diameters, allowing use across many calibers.

4. Does it work without the comparator body?

No. The bushings must be used with the Hornady comparator body and calipers.

5. Can beginners use this tool?

Yes, but it’s most beneficial once you understand die setup and shoulder bump concepts.

Delivery and Compliance

  • ✔️ No firearms licence required
  • ✔️ Classified as a measuring/reloading accessory
  • ✔️ Legal to import, purchase, and ship within New Zealand
  • ✔️ Can be delivered directly to residential or business addresses

Questions?

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