Mr. Nicol. Absent in all the other cases.
Mr. Eisenberg. So that extractor marks did not appear in the other cases?
Mr. Nicol. Extractor marks appeared, but these marks did not appear.
Mr. Eisenberg. Well, two sets of extractor marks have been put on——
Mr. Nicol. This would be possible—perhaps the violence with which the weapon was activated in this particular incident—or it might be the result of something not associated with the internal mechanism of the weapon, but might be the result of the charger or the cartridge carrier that is introduced into—the way the cartridges are introduced into the magazine.
Mr. Eisenberg. Now, what led you to the conclusion that this was an extractor mark?
Mr. Nicol. Only that it appears at the location of the cartridge case where an extractor mark would normally be found. That is to say, this would be the mark where the extractor strikes the edge of the case, and then springs around as the cartridge is driven into the chamber.
Mr. Eisenberg. But you could not definitely say whether it is an extractor mark produced by the rifle through which the test bullets you were given were fired?
Mr. Nicol. No, sir; I could not.
Mr. Eisenberg. Now, I am not quite clear as to why another set of marks should have appeared on the other cases, which you also think are extractor marks.