Quick Answer
Barrel length affects .17 HMR performance on small game by influencing bullet velocity and kinetic energy. A shorter barrel tends to retain more velocity at close ranges, while a longer barrel may provide better penetration at longer ranges. This relationship is essential for optimizing .17 HMR performance on small game.
Barrel Length and Velocity
The .17 HMR is a high-velocity cartridge with a relatively flat trajectory. A shorter barrel can retain more velocity at close ranges, making it more suitable for small game hunting. For example, the Hornady V-Max .17 HMR retains 2,500 ft/s at 25 yards with a 10-inch barrel, but drops to 2,350 ft/s at 25 yards with a 24-inch barrel.
Barrel Length and Kinetic Energy
Kinetic energy is a critical factor in small game hunting, as it affects the bullet’s ability to penetrate and expand. At longer ranges, a longer barrel can provide better penetration due to the increased kinetic energy. For instance, the Remington 17 HMR with a 26-inch barrel produces 115 ft-lbs of kinetic energy at 100 yards, while the same cartridge with a 20-inch barrel produces 105 ft-lbs.
Practical Considerations
In practice, a 20-inch barrel is a good compromise between velocity retention and kinetic energy production. This barrel length provides a good balance between close-range performance and longer-range penetration. Additionally, a 20-inch barrel is often easier to handle and maneuver in tight spaces, making it a popular choice for small game hunting.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.