© 1949 by Oxford University Press
THE BALLISTIC EFFECTS OF BORE RESISTANCE
( Armament Research Establishment Fort Halstead, Sevenoaks )
Resistance to motion of a projectile down the bore of a gun alters the pressure and velocity attained, but is usually neglected in ballistic theory. It is shown that weighting factors can be calculated for each point in the shot travel, such that the effect of a bore resistance with any desired dependence on travel can be quickly found by integration of the product of weighting factor and resistance. The method fails if the resistance is sufficient to stop the shot for a time, and initial engraving resistance is therefore not a special case of this solution.