Editing Air gun (section)

==Calibers==
The most common air gun [[caliber]]s are
* [[.177 caliber|.177]] (4.5&nbsp;mm): the most common caliber. Mandated by the ISSF for use in international target shooting competition at 10m, up to Olympic level in both rifle and pistol events. It has also been adopted by most National Governing Bodies for domestic use in similar target shooting events. It has the flattest trajectory of all the calibers for a given energy level. At suitable energy levels it can be used effectively for hunting.
* [[.22 caliber|.22]] (5.5&nbsp;mm & 5.6&nbsp;mm): for hunting and general use. In recent years air rifles and pistols in .22" (and some other calibers) have been allowed for use in both domestic and international target shooting in events not controlled by the ISSF. Most notably in FT/HFT and Smallbore Benchrest competitions. These events often allow the use of any caliber air gun, up to a maximum which is often .22", rather than a fixed caliber.

Other less common traditional calibers include:
* [[5 mm caliber|.20]] (5&nbsp;mm): initially proprietary to the Sheridan multi-pump pneumatic air rifle, later more widely used. 
* [[.25 caliber|.25]] (6.35&nbsp;mm): the largest commonly available caliber for most of the 20th century.
* [[.30 caliber|.30]] (7.62&nbsp;mm): the current largest available for non-PCP powered airguns

Larger caliber air rifles suitable for hunting large animals are offered by major manufacturers. These are usually PCP guns. The major calibers available are:
* [[9 mm caliber|.357]] (9mm)
* [[.45 caliber|.45]] (11.43&nbsp;mm)
* [[.50 caliber|.50]] (12.7&nbsp;mm)
* [[.58 caliber|.58]] (14.5&nbsp;mm)
* [[.72 caliber|.72]] (18.28&nbsp;mm)

Custom air guns are available in even larger calibers such as [[20 mm caliber|20 mm]] (0.79") or .87 (22.1&nbsp;mm).