No I meant the head of the cartridge. You obviously knew what was being discussed. Call it what you may, extractor groove, base of the cartridge, head, or rim take your pick it is all the same.
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"But you're wrong.... The extractor cannot "spring around" the rim of a cartridge because the tolerance inside the receiver are too tight to allow the extractor to "spring around" the rim of the cartridge."
But yet it does work that way. Absolute nonsense stating it doesn't. Stop pretending and buy a rifle and go shoot it. You will then know what the rest of us know. I bet it is hard to give up a concept you have been railing at for years.
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Just like Frazier, here is one more firearms expert describing how the extractor springs around the head of the cartridge when the shell is already present in the chamber.
Joseph Nicol stating in his WC testimony about the extractor springing around the head of the shell, obviously also felt it was possible in answering a question from Eisenberg.
Mr. EISENBERG. Now, what led you to the conclusion that this was an ex tractor 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.
Thank you for presenting another so called "expert" who didn't know how the Carcano operates..... I was not aware that Nicol made this bonehead statement.
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. the extractor strikes the edge of the case, and then springs around as the cartridge is driven into the chamber.
Nicol clearly doesn't know that the face of a carcano bolt is much smaller than the head of the brass cartridge . The area in front of the annular groove and the extractor of the bolt that would contact a cartridge in the chamber is 10mm in diameter, and the rim of a carcano cartridge is 11.3mm. Attempting to load a single round would be akin to putting a 10mm nut on a 12mm bolt .... Or putting a 12mm square peg in a 10mm round hole.....
Nicol's choice of words also reveals his ignorance....
" as the cartridge is driven into the chamber." The cartridge is not DRIVEN INTO the chamber of any rifle that I know of.... If the cartridge has to be driven into the chamber I wouldn't want to be the person firing that rifle..... Or the person who would have to remove that cartridge from the chamber after it was fired.....