Product Overview
The Hornady Rimfire line of ammunition, specifically the .17 Hornady Magnum Rimfire (HMR) 15.5 grain NTX load, is engineered for precise varmint eradication. Developed for applications ranging from prairie dogs to coyote and fox, this cartridge integrates high-speed ballistics with a specialized projectile design to ensure consistent, effective terminal performance. This offering from Hornady is a utility-driven solution for shooters requiring accuracy and reliable expansion.
Key Features
NTX Projectile Technology
The 15.5 grain NTX (Non-Toxic Expanding) projectile is a lead-free, precision-engineered bullet. Its design facilitates rapid energy transfer upon impact, promoting dramatic expansion critical for clean, humane varmint dispatch. This controlled fragmentation mitigates over-penetration while ensuring decisive terminal effects, adhering to environmental considerations where lead-free ammunition is preferred or required.
Optimized Ballistics
This .17 HMR load is characterized by its high-velocity profile, a fundamental attribute for varmint cartridges. The aerodynamic projectile design and consistent propellant charge collectively deliver a flat trajectory, simplifying elevation holds across common varmint engagement distances. This inherent ballistic precision contributes directly to the tack-driving accuracy documented with this ammunition, enabling consistent shot placement.
Reliability and Consistency
Hornady’s manufacturing protocols ensure each round provides consistent performance. Components—primer, propellant, and the NTX projectile—are meticulously integrated to maintain uniformity across lot numbers. This dedication to precision manufacturing translates into dependable cycling, predictable ballistic characteristics, and consistent terminal performance shot after shot.
Technical Specifications
- Caliber: .17 Hornady Magnum Rimfire (HMR)
- Bullet Type: NTX (Non-Toxic Expanding)
- Bullet Weight: 15.5 Grains
- Rounds Per Box: 50
- SKU: RSR|H83171
- Primary Application: Varmint Hunting (e.g., prairie dogs, coyote, fox)









