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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187-grain bullet 5-shot groups 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 deflection degrees diameter distance drill error experiments feet from muzzle figure fixed ammunition flying bullet front seating grains powder grooves gyration hole Hoosick Falls illustrated inch to left inches long inches to right indicated 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 perfect placed plank shooting Plate plot plug Pope pressure primer represented rifle barrel rifle bore riflemen rotation 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 y-spiral yards