This rather unique arm has a slightly oblate bore. The twist, as found by experience to be most advantageous, is one turn in 52 inches. The approved diameter of the bore is .498 inch, the length of the barrel being 32 inches. An eccentricity of .01 inch in half an inch is found sufficient to make the bullet spin on its axis to the extreme verge of its flight. The length of the bullet found to answer best with these rifles is 2j4 diameters in length with a windage of.004.
The four barrel Lancaster hammerless pistol is occasionally used, though the revolver has, of course, nearly supplanted it. In general construction it much resembles the early Sharps four barrel pistol made in this country, and like it, accuracy for all four barrels is impossible to attain.
Farrow, Edward S. American Small Arms; a Veritable Encyclopedia of Knowledge for Sportsmen and Military Men. New York: Bradford, 1904. Print.
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