Breech block extractor problem

Dick Herman · 08-24-2015, 09:36 PM

As you know, when a cartridge is in place the extractor pivots about the small retainer pin. The extractor retains the cartridge and projects above the breech block. The extractor moves vertically toward the breech block internal flanges for retention and alignment. The ejector pushes the cartridge and the extractor vertically upward. If there is forceful contact made with the small breech block internal flanges a cantilever load is applied. The vertically applied load causes a bending moment reaction to roll the internal flanges into the damage displayed on the photo.
IMHO

08-24-2015, 09:36 PM	#20
Dick Herman User Join Date: Apr 2006 Location: Texas Posts: 302 Thanks: 496 Thanked 354 Times in 138 Posts	As you know, when a cartridge is in place the extractor pivots about the small retainer pin. The extractor retains the cartridge and projects above the breech block. The extractor moves vertically toward the breech block internal flanges for retention and alignment. The ejector pushes the cartridge and the extractor vertically upward. If there is forceful contact made with the small breech block internal flanges a cantilever load is applied. The vertically applied load causes a bending moment reaction to roll the internal flanges into the damage displayed on the photo. IMHO