Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
For varmint hunters operating under lead restrictions or seeking cleaner terminal ballistics, CCI 17 HMR ammo loaded with the 16-grain Speer TNT Green solid hollow point clears the regulatory bar and delivers on-target performance. The 17 Hornady Magnum Rimfire cartridge — a joint development between Hornady and Marlin that necks the .22 Winchester Magnum Rimfire down to accept a .17-caliber projectile — provides flat trajectory and minimal wind drift out to 150 yards. This load pushes the lightweight TNT Green bullet to 2500 feet per second at the muzzle, generating 222 foot-pounds of energy and supersonic flight well past typical engagement distances for small predators and burrowing rodents.
Built for the Box
CCI manufactures this ammunition in the United States, pairing their rimfire priming consistency with Speer’s lead-free TNT Green projectile — a solid copper hollow point designed to fragment violently on impact with soft tissue. The bullet’s construction eliminates lead from both the core and the base, satisfying California’s Condor Preservation Act requirements and similar state-level bans without sacrificing terminal effect. The hollow point cavity initiates expansion at varmint velocities, fragmenting into multiple petals that maximize wound channel diameter and energy transfer. Supersonic velocity rating ensures the projectile remains above the sound barrier through the effective engagement envelope, reducing flight time and simplifying holdovers on moving targets.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 17 Hornady Magnum Rimfire (HMR) |
| Bullet weight | 16 Grains |
| Bullet type | Solid Hollow Point (Speer TNT Green) |
| Muzzle velocity | 2500 Feet Per Second |
| Muzzle energy | 222 Foot Pounds |
| Rounds/box | 50 |
| Lead free | Yes |
| Velocity rating | Supersonic |
| Intended use | Hunting |
| Manufacturer | CCI |
This 50-round box ships DOT-regulated and weighs 0.385 pounds. The TNT Green projectile’s copper construction removes lead exposure from both the shooting line and the field — a material consideration for high-volume prairie dog shoots or areas with avian scavenger populations. Pair this load with bolt-action or semi-automatic rifles chambered in 17 HMR ammo and zeroed at 100 yards for direct holdover on varmints to 125 yards, then hold slightly high for targets past that mark.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Treat every firearm as if it is loaded. Keep the muzzle pointed in a safe direction at all times. Keep your finger off the trigger until you are ready to fire. Be certain of your target, backstop, and what lies beyond.
- This ammunition contains copper projectiles. California Proposition 65: Copper and its compounds are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov.
- Rimfire ammunition cannot be reloaded. Dispose of fired casings responsibly.
Reviews
There are no reviews yet.