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Show Use of Dry Ice to Cut Firing Costs New Principle for Shooting Guns Is Invented. DENVER. Have you heard about the new gas-fired pistols, rifles and shotguns? If you're a sportsman, jot down in your notebook to look into this right after the war. Ray Monner of Denver, a college professor who invented this new firing fir-ing principle, says the ammunition for the new gun will cost about ' one-tenth as much as the eunpow- der type and will weigh only one-third one-third as much. Guns never heat with the gas explosive ex-plosive and barrels never have to be cleaned because there are no powder pow-der fumes or smokes. The recoil is as gentle as a kitten's purring and noise is negligible. "This gun fires carbon dioxide gas, otherwise known as C02 or dry ice," . says Monner, who is blonde, has a pleasant smile and has spent months in Washington attempting to adapt the new invention to the U. S. army's needs. "I discovered the firing principle when I was fooling around in my home workshop trying to make a toy," he says. "The first gun I made was just a toy that fired common BB shot, similar to compressed com-pressed air rifles. "The C02 is carried in a small cartridge that will hold four ounces and will sell for around 114 cents. This will fire about 2,000 lead pellets pel-lets of .22 caliber that cost about ' 0 cents a thousand. The pellets a e not mounted in a cartridge, as a gunpowder-propelled slug is, but instead in-stead are placed in a magazine beside be-side the barrel of the weapon. "The explosion of each shot of gas propels the pellet through the barrel at about the same velocity as if it was fired by gunpowder. The recoil re-coil is gentler than that of gunpowder gunpow-der because the impact is applied to the slug throughout the entire length of the barrel of the weapon. Gunpowder applies its impact in virtually vir-tually one instantaneous blow. |