The Bullet's Flight from Powder to Target: The Internal and Exteranl Ballistics of Small Arms ; a Study of Rifle Shooting with the Personal Element Excluded, Disclosing the Cause of the Error at Target |
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12 inches 187-grain bullet 5-shot groups 8-inch twist air space air spiral amount average axis Babbitt metal base band black powder bore-diameter bullet bullets tipped butt calm air cause center of gravity chamber charge concentric action cross cut Fig cylindrical deflection degrees diameter error experiments feet from muzzle figure fixed ammunition flight flying bullet front seating grains powder grooves gyration hole Hoosick Falls illustrated inch to left inches long inches to right indicate jacket June 12 Laflin & Rand lead bullet left twist Leopold line of fire loading maximum tip metal motion mutilated bullets muzzle-loading no-tip position normal group o'clock oblique oscillation placed plank shooting Plate plot plug Pope pressure primer rifle barrel rifle bore riflemen shell short barrels shown shows side smokeless powder spinning straight swaged tangent target telescope telescope sight tipping bullet trajectory tube unbalanced bullet upset V-rest woodchuck x-error yards