For those with "post counts" that exceed their knowledge on the subject is a bit of Jim Carmicheals "Book of the Rifle"
Let's look extractors another way. When a traditional Mauser - type extractor lets go and fails to pull a stuck case out ofthe chamber', it's usually because it springs outward and slips over the case rim. Of course this seldom happens, but I've experienced it several times with every existing action type having an external leaf-type extractor. Fortunately, this never happened at a critical time. It always occured when i had faulty ammo or when I was fooling around with some overly hot handloads at the bench. By comparison, the Remington 700 extractor and similar systems can't easily override the cartridge rim. Being supported by the steel wall of the countersink, it can't spring away from the case. The Remington extractor dosen't need to be any stronger because it is supported by the tremenduos strength of the bolt itself. Because the extractor can't back over the case rim' it has no choice but to hang on.
Tiring of all the AMATEUR complaints they were getting about their miniature extractor, some engineers at Remington Arms concocted an empirical tug -of-war test between a standard Model 98 extractor and their Model700. a steel rod was lathe-turned to cartridge diameter, with rims turned on each end. Theese rims were fitted into each bolt under the extractor in the way a cartridge rim fits. The bolts were fixtured into a giant laboratory instrument used to measurure tensile strength. In a simple tug of war, the machine ran the pressure on each extractor up to hundreds and then thousands of pounds. Even the steel rod connecting the two extractor systems began to stretch, but then the Mauser extractor let go. the Remington extractor was victorious.
I didn't witness the test, but i did see movies of the event, and it certainly was most impressive....
WELL THERE YOU HAVE!!!!! That ought to save at least one Mauser from an Ardent gunnut