The difference between .177 caliber and .22 caliber refers to the diameter of the bore (the inside of the gun barrel) in inches. Specifically, .177 caliber means that the internal diameter of the gun barrel is 0.177 inches, and .22 caliber means the internal diameter is 0.22 inches.
Here are some key differences between .177 caliber and .22 caliber airguns:
Projectile Size: .177 caliber airguns fire smaller pellets, which are 4.5mm in diameter, while .22 caliber airguns fire larger pellets, which are 5.5mm in diameter.
Speed and Trajectory: Generally, .177 caliber pellets are lighter and travel at a higher velocity compared to .22 caliber pellets. Because of their higher speed, .177 pellets tend to have a flatter trajectory and are less affected by wind. .22 pellets, being heavier, might have a slightly slower speed but carry more energy, making them better suited for hunting at closer ranges.
Accuracy: The accuracy of both calibers can vary based on the specific airgun, pellet design, and shooter skill. Some shooters prefer .177 caliber for its flatter trajectory and accuracy at longer distances, while others prefer .22 caliber for its stopping power and better performance at shorter ranges.
Hunting Use: Many hunters prefer .22 caliber airguns for small game hunting because of the larger pellet size and higher kinetic energy. The larger pellet creates a larger wound channel, which can be more effective for hunting purposes.
Pellet Availability: .177 caliber pellets are more common and widely available, and they often come in a greater variety of designs, including domed, pointed, hollow point, etc. .22 caliber pellets are also readily available but might have a slightly smaller selection compared to .177 caliber pellets.
Ultimately, the choice between .177 caliber and .22 caliber depends on the intended use of the airgun and personal preference. If you're planning to use the airgun for target shooting and plinking, .177 caliber might be a good choice due to its flatter trajectory and wide pellet selection. If you're primarily interested in hunting small game, .22 caliber might offer better stopping power at closer ranges.