A is an unfired lead *3ik> revolver bullet. B is a similar bullet which has been fired by a Webley revolver. The Webley typo of rifling (7 grooves, right-hand twist, narrow lands) is distinctly engraved on the bullet. The arrow indicates the "skid mark." C is an unfired nickel-jacketed 7*63 mm. pistol bullet. And D is a similar bullet fired by a Schwartloze self-loading pistol. The engraving is that of the type oi rifling commonly used in the early models of self-loading pistols (4 grooves, right hand twist, lands narrower than the grooves). The arrow indicates the "stabbing"
mark by which the bullet is held in the cartridge case marks common to both, and in the same relative positions in both cases.
Like the striker indentation the distinctness of the ejector mark is affected by pressure, even if indirectly. A high-pressure round causes the breech block in a self-loading pistol to be thrust back with greater violence, which means that the fired case (which is carried back with the breech block) is brought up against the ejector with greater violence, and so the resulting mark is more distinct.
But a weak round which is only just lively enough to push back the breech block will produce a very faint ejector mark.
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