17 HMR
.17 Hornady Magnum Rimfire (4.5x27mmR), commonly known as the .17 HMR, is a rimfire rifle cartridge developed by the ammunition company Hornady in 2002. It descended from the .22 Magnum by necking down the .22 Magnum case to take a .17 caliber (4.5 mm) projectile. Commonly loaded with a 17 grain (1.1 g) projectile, it can deliver muzzle velocities in excess of 775 m/s (2550 ft/s).
Suggested Use
- Predators
- Small Game
- Varmint
Advantages
Faster flight: 2350-2550fps compared to the Hornady 2200fps 22Wmr 30gr rounds
Flatter trajectory
Longer range. Bullets expand better especially at longer ranges e.g. 150 yards
As the round is faster there is less chance of ricochet due to bullet 'break up' at shorter ranges