This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: ... the mechanical equivalent, heat, generated by the combustion of the fired charge. A part only of this energy is the effect obtained by the movement imparted to the projectile, and the stress upon the gun. The stresses upon the barrel and breech, the friction upon the barrel, and such effects of the combustion as ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: ... the mechanical equivalent, heat, generated by the combustion of the fired charge. A part only of this energy is the effect obtained by the movement imparted to the projectile, and the stress upon the gun. The stresses upon the barrel and breech, the friction upon the barrel, and such effects of the combustion as affect the projectile whilst within the barrel, are comprised in the term internal ballistics, which, excepting the motion of the rifle, do not concern the shooter, but the makers of the rifle and ammunition. These, with the help of scientific investigations, have ascertained so much respecting the action of weapons and loads, that they have reduced the usual results to uniform performance, so they become a series of 'constants, ' which either neutralise each other, or demand of the shooter only a fixed allowance for error. Recoil, with its secondary movements, 'jump' and 'flip, ' will be mentioned later. The rifleman who wishes to know how the ex 92 ploding of a charge within a gun-barrel moves the projectile from a state of rest to progress at a high speed, should consult chapter xxiii. of The Gun and Its Development, which may be seen in any reference library, or study the subject at greater length in the official Text Book for Small Arms and Ammunition, and similar publications. Just as 'internal ballistics' comprises all that tends to impart motion to the bullet, so 'external ballistics' is the term used to signify the conditions that modify the flight of the bullet and bring it again to a state of rest. So much is included--nearly all that pertains to scientific gunnery--that only what is elementary can be treated here. For a knowledge of the general principles and details of their application to shooting with the rifle, the reader interested i.
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