Nov 24, 2013 Shooting a .25 caliber PCP with open sites, this gun is a hammer on squirrels but lord Examples of spring piston guns being produced in .25 are the Webly Patriot, the Beeman RX2, the Hatsan 125 . to 50 yards, similar to the Walther Falcon Hunter ) that produces 23-29 ft.lbs in gas ....