Hornady Lock-N-Load Rimfire Thickness Gauge
Sort .17 and .22 caliber rimfire ammunition by rim thickness for consistent ignition and improved accuracy. Attaches to calipers with included bushings for competitive and varmint shooting.
Precision Ammunition Sorting for Rimfire Shooters
The Hornady Lock-N-Load Thickness Gauge is a specialized tool designed for shooters who demand consistency in their ammunition. By sorting rimfire cartridges according to rim thickness, you achieve more uniform ignition characteristics—a technique long favored by competitive shooters and serious varmint hunters.
Key Features
- Caliber Compatibility: Works with most .17 and .22 caliber rimfire ammunition
- Easy Attachment: Mounts directly to your existing calipers
- Included Bushings: Multiple bushings provided for different rimfire cartridge dimensions
- Proven Method: Endorsed by precision shooters for improved accuracy
Why Rim Thickness Matters
Rimfire ammunition varies slightly in rim thickness from round to round. These small variations can affect firing pin strike consistency and ignition timing. Sorting ammunition by rim thickness groups cartridges with similar ignition qualities, resulting in tighter shot groups and more predictable ballistics.
Ideal For
- Competitive rimfire shooters
- Varmint hunters seeking maximum accuracy
- Reloaders and ammunition enthusiasts
- Anyone serious about precision shooting
Note: Not compatible with .17 Winchester Super Magnum (WSM) ammunition.
