Garand Thumb · Video summary
How Deadly Is 17 HMR? (Super Small Varmint Round)
The 17 HMR is a high-velocity rimfire round that excels at varmint hunting by causing rapid energy dispersal and explosive fragmentation, though it lacks penetration for defensive use.
Watch on YouTube ↗Key takeaways
- 🎯The 17 HMR achieves extreme lethality on small varmints due to its high velocity (around 2600 FPS) combined with a light projectile (17 grains), causing rapid energy dump and explosive fragmentation upon impact.03:01
- 💡Hornady V-Max and CCI TNT hollow points demonstrate different fragmentation patterns: V-Max disintegrates into many small pieces, while the hollow point causes a larger temporary cavity and fragmentation, both highly effective for varmint destruction.06:33
- 📈While 17 HMR shows impressive energy dispersal and fragmentation in tissue (meat targets), it lacks the penetration (around 12 inches recommended for human defense) seen in larger calibers, making it less suitable for self-defense scenarios.08:29
- 🔍22LR, despite lower velocity and less dramatic terminal effects compared to 17 HMR, offers surprisingly good performance and greater penetration, making it a versatile and consistently reliable round.09:44
- 🚀Meat targets provide a more realistic indicator of terminal ballistics for soft tissue than ballistic gelatin, highlighting how rounds perform in a more biologically accurate medium.14:24
- 📚Consider meat targets as a practical method for evaluating the real-world terminal performance of ammunition, potentially offering more insight than standard ballistic gelatin tests.14:24
Chapters
- 0:02🎯 Introduction and context
- 0:43🎯 What is the 17 HMR?
- 2:32🎯 Testing setup overview
- 3:36🎯 Velocity testing of rounds
- 4:19🎯 Ballistic gel testing
- 11:53🎯 Meat target testing with jacketed hollow point
- 14:42🎯 Meat target testing with V-Max rounds
- 17:02🎯 Damage assessment and comparison
- 19:32🎯 Dummy testing and real-life implications
- 20:23🎯 Summary and conclusions
- 20:44🎯 Recommendations for defense
- 22:20🎯 Closing remarks and humor
The digest
This detailed analysis examines the ballistic properties, terminal performance, and practical lethality of the 17 Hornady Magnum Rimfire (17 HMR) cartridge, an increasingly popular small varmint round in the United States. Through a series of controlled velocity tests, ballistic gelatin and meat target evaluations, and high-speed video analysis, the content dissects how the 17 HMR compares to the more ubiquitous .22 Long Rifle (22 LR) in terms of velocity, penetration, and damage potential. The assessment is crucial for hunters, shooters, and firearm enthusiasts interested in understanding the real-world capabilities and limitations of the 17 HMR, particularly its efficacy on small varmints and potential, albeit limited, impact on human tissue analogs.
Understanding the 17 HMR: Cartridge Origins and Context
The 17 HMR round is a rimfire cartridge known for its high velocity and small projectile size, typically firing a 17-grain bullet. Unlike the slower and lighter 22 LR, the 17 HMR achieves velocities over 2,500 feet per second, rivaling some centerfire rifle rounds in speed. Designed primarily for varmint hunting—small nuisance animals like whistle pigs—the round delivers a flat trajectory and marked expansion capability.
Key Points:
- Rimfire design: Similar to 22 LR, but significantly faster and more powerful.
- Common uses: Varmint control across the U.S.
- Projectile weight: Approximately 17 grains, with various bullet types including hollow points and polymer-tipped V-Max rounds.
Keep reading in The Digest
The full 6-minute article, 9 more sections, and every new episode from Garand Thumb and the creators you follow.
- Velocity Testing: Speed Comparison to Other Rimfire and Centerfire Rounds
- Ballistic Gelatin Testing: Penetration and Temporary Cavity Analysis
- Meat Target Testing: Realistic Tissue Damage Insights
- Comparison to .22 Long Rifle (22 LR)
- High-Speed Video and Ballistic Dummy Analysis
- Conclusions: Practical Assessment of the 17 HMR’s Lethality
- Key Framework: Assessing Small-Caliber Cartridge Lethality
- Practical Takeaways for Shooters and Hunters
- Recommended Actions Based on Findings
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