Casedamage


#1

This short .22 case came out of a box of Winchester .22 short. It was probably fired in a single shot bolt action rifle, brandname Tosche + Co, proofed in Ulm, 1974, .22LR. The rifle, basic construction, seems in good working condition. Never seen this before. What could have damaged this case?


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#2

Seen this from use with a missing case extractor. The force of the “explosion” blows the case into the void left by the missing extractor quadtrant. This leads to the failure in that area.


#3

I’ll try to make a good picture of the chamber and of the extraction-system (very basic but difficult to explain.) Maybe that clarifies the cause.


#4

Eightbore is right on the money. Missing extractor.


#5

Could have also been a case that blew the extractor out? :)


#6

Here are two pictures of the suspected chamber. Maybe it has to do with too much tolerance of the half moon part that serves as extractor? Or was it just a weak case?


#7

It look like the extractor was not in the right position when the bolt hit the primer.
It seams that it was located behind the cartridge. Is that possible?


#8

The “half-moon” extractor (at least in my Voere rimfire inherited from my father) is a separate part. You can assemble and fire the rifle without the extractor in place. I suspect this is what happended.


#9

Yeah, I go along with the case being fired with the extractor missing, it would have to be a very, very bad fitting extractor to give that level of damage to the case.
I can do the same with my Anschutz as JPeelen says and assemble it without the extractor in situe under the bolt.
I cannot see it being with the bolt located behind the extractor as the bolt would not reach the breech face and could not be rotated and engaged with the sears.


#10

Voere, Anschütz, Tosche…all of the same kind. And with this rifle too: the “half-moon” extractor is very easy to remove. The rifle must have been fired without it. There’s no other way to close the bolt as Eightbore states. Thank you, gentlemen, as usual.


#11

Pardon me for asking, but I am confused:
Is the picture of the rifle the one in question?
I ask because the extractor is certainly in place in the second photo.
Thanks.


#12

The assumption is that the extractor was not in place when the cartridge in question was fired. The extractor is a separate part. Its normally removed when cleaning the barrel to prevent it from falling out of the receiver. An operator may forget it when re-assembling the rifle.


#13

Yes, that’s what happened.The damaged case matches also with the thickness of the extractor. The gun was fired without extractor, accidently and that caused the strange damage to the case.