Pneumatic air rifles have reached a new levelof efficiency. Instead of the tedious process of using a hand pump to compress air in the reservoir, we can now fill them up using a scuba tank.
High-performance air rifles generally fall into two major categories which are based upon the type of power plant; pneumatic and spring piston. Pneumatic guns generally encompass those models in which compressed air is stored in the gun prior to shooting. Modern pre-charged pneumatic (PCP) rifles like the Air arms S 410-SL are extremely powerful. They employ a reservoir to store compressed air at approximately at between 100 and 200 bars (approximately 1450 to 2900 psi) from a scuba tank, although this can also be accomplished by using special air pumps that have appeared on the market in recent years.
PCP rifles are among the most powerful adult air rifles available, with some models developing close to the muzzle energy of low velocity rimfire and small-calibre centrefire handguns – 28 ft/lbs in .22 calibre and 20 ft/lb in .177. European makers of PCP pneumatic rifles suitable for 10-metre Olympic events include Anschutz, Baikal, Dianawerke, Feinwerkbrau, Hammerli, Steyr and Walther. As well, the British company Air Arms produces superb examples of pre-charged pneumatics guaranteed to inspire even the most jaded air gun buff. They were developed primarily for the enormously popular competitive sport of Field Target shooting in the U.K, rather than international-style 10-metre events.