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mrerick · 04-22-2013, 05:37 PM

I've been assuming a 9mm Luger pistol, which your 41 byf should be. All 9mm Luger headspaces on the mouth of the cartridge. The stepped chamber was a DWM innovation to further seal the chamber during firing. It would be good to photograph how far the cartridges are protruding from the barrel breech. Be careful to remove the toggle train if you do this with a live cartridge, and treat it as a loaded gun.

Thanks to the fluted firing pin that should be in this pistol, you probably didn't have breech block damage.

There is definitely something wrong if you are piercing this high a percentage of primers.

If this is not an all matching gun, be aware that the wrong size parts may have been installed by someone (there were two breech / receiver lengths).

Follow Jerry's advice, and get a good look at things first...

Marc

04-22-2013, 05:37 PM	#8
mrerick Super Moderator - Patron LugerForum Life Patron Join Date: Dec 2009 Location: Eastern North Carolina, USA Posts: 3,925 Thanks: 1,377 Thanked 3,140 Times in 1,520 Posts	I've been assuming a 9mm Luger pistol, which your 41 byf should be. All 9mm Luger headspaces on the mouth of the cartridge. The stepped chamber was a DWM innovation to further seal the chamber during firing. It would be good to photograph how far the cartridges are protruding from the barrel breech. Be careful to remove the toggle train if you do this with a live cartridge, and treat it as a loaded gun. Thanks to the fluted firing pin that should be in this pistol, you probably didn't have breech block damage. There is definitely something wrong if you are piercing this high a percentage of primers. If this is not an all matching gun, be aware that the wrong size parts may have been installed by someone (there were two breech / receiver lengths). Follow Jerry's advice, and get a good look at things first... Marc __________________ Igitur si vis pacem, para bellum - - Therefore if you want peace, prepare for war.