Breech Block Failure 1916/1920 Erfurt

gunbugs · 01-29-2021, 08:23 AM

I understand the operation on the locking/unlocking system on the Luger, and other firearms. However, the O.P. states that no pierced primers were evident in this occurrence. So, that being said, why would the extractor beat its way through the top of the block? Even with a couple thousandths excessive headspace, the cartridge should obturate, and seal the chamber from gas leakage. I deal with firearms that have excessive headspace on a fairly common basis, and the typical symptom is stretched brass, not gas leakage. Even a pierced primer should not leak enough gas to make an extractor try to leave the gun. Again, the O.P. states no pierced primer here.

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01-29-2021, 08:23 AM	#19
gunbugs Lifetime Forum Patron Join Date: Sep 2013 Location: Fairbanks, Alaska. Home of the best moose. Posts: 673 Thanks: 371 Thanked 1,202 Times in 407 Posts	I understand the operation on the locking/unlocking system on the Luger, and other firearms. However, the O.P. states that no pierced primers were evident in this occurrence. So, that being said, why would the extractor beat its way through the top of the block? Even with a couple thousandths excessive headspace, the cartridge should obturate, and seal the chamber from gas leakage. I deal with firearms that have excessive headspace on a fairly common basis, and the typical symptom is stretched brass, not gas leakage. Even a pierced primer should not leak enough gas to make an extractor try to leave the gun. Again, the O.P. states no pierced primer here.