Hy-Score 800 Spring Pistol American made Model 800 (1948-1970). The breech is accessed by a mechanism housed inside the swelling at the rear of the receiver. It acts like a camera shutter and seals the breech when closed. Twist in one direction to open for loading and back to close the breach. The gun is held with the muzzle pointed down to load, because the pellet has to drop through the loading port and into the back of the barrel. Hy-Score pistols develop velocity in the high 300 f.p.s. in .22 caliber. Asking $50.