Hornady Lock-N-Load Headspace Comparator Kit
If a watched item goes up, you get 24 hours to buy at the old price. Applies to the exact variant you added.
Out of stock? We'll email you when it's back.
Overview
The Hornady Lock-N-Load Headspace Comparator Kit is an essential tool for reloaders, meticulously designed to extend brass life, improve accuracy, and enhance safety throughout your reloading process. This comprehensive kit enables you to precisely measure variations in your brass before and after firing or resizing. It facilitates a direct comparison between fire-formed brass and your resized cases, providing crucial data for optimal reloading results and consistent, reliable ammunition.
For optimal reloading performance, particularly when performing full-length resizing, your die should be adjusted to set the shoulder back by .001" to .002". This precise adjustment, guided by your comparator readings, provides minimal clearance with your firearm's chamber. Correct headspace minimises case stretching, reduces work hardening, significantly extends case life, improves accuracy, and increases overall safety. This process is vital for any reloader seeking to refine their ammunition for hunting or sporting activities.
- Precise Brass Measurement: Enables accurate measurement of variations in brass before and after firing or resizing, allowing for direct comparison between fire-formed and resized cases.
- Enhanced Reloading Safety: Assists in detecting excessive headspace conditions, ensuring reliable firing pin contact with the primer and overall load consistency.
- Extends Case Life: Proper headspace minimises case stretching and reduces work hardening, significantly extending the usable life of your brass.
- Improves Accuracy: Precise die adjustment based on comparator readings provides minimal chamber clearance, leading to improved consistency and accuracy in your loads.
- Bent Rim Detection: Autoloader users can identify cases with bent rims by rotating the brass, helping to eliminate inconsistent shots or "flyers."
- Wide Cartridge Compatibility: The five included bushings are compatible with most bottleneck cases, ranging from .17 Rem through belted magnums, including comprehensive support for Ackley Improved chambers.
| Bushing A | .330" - Compatible with .17 Rem, 204 Ruger, 221 Rem FB, 222 Rem, 222 Rem Mag, 223 Rem, 220 Swift |
| Bushing B | .350" - Compatible with 22 PPC, 22/250 Rem, 6 PPC, 6 BR Rem, 250 Savage, 7 BR Rem |
| Bushing C | .375" - Compatible with 6mm Rem, 257 Rob, 25/06 Rem, 270 Win, 7x57mm Mauser, 280 Rem, 30/30 Win, 30/06 Sprg, 300 H&H Mag, 7.62x39 Brit, 6.5x55 Mauser, 7mm WSM, 303 Brit, 30-40 Krag |
| Bushing D | .400" - Compatible with 223 WSSM, 243 Win, 243 WSSM, 260 Rem, 270 WSM, 7mm/08 Rem, 300 Savage, 308 Win, 35 Rem |
| Bushing E | .420" - Compatible with 6.5x284, 284 Win, 7mm Rem Mag, 7mm Ultra Mag, 300 WSM, 300 Wby Mag, 325 WSM, 338 Win Mag, 350 Rem Mag, 375 H&H Mag, 264 Win Mag, 7mm SAUM, 7mm STVV, 300 RSAUM, 300 Win Mag, 300 Ultra Mag, 8mm Rem Mag, 338 Ultra Mag, 35 Whelen |
- Robust comparator body
- Five interchangeable bushings (A, B, C, D, E)
The Hornady Lock-N-Load Headspace Comparator Kit is an indispensable addition to any reloader's bench, providing the precision needed to craft consistent and high-performing ammunition. For detailed cartridge compatibility, refer to the comprehensive Hornady Headspace Bushing Size Chart or consult the product instructions. Many Weatherby cases can be checked by measuring cases on the ii radius and on the outside radius, using the appropriate bushing size(s) to gauge near the centre of the radius.