Breech block not closing

rhuff · 06-07-2012, 01:38 PM

I, personally, would not change the feed ramp profile in any way, shape or form. I do polish the feed ramps(frame and barrel) on my shooters, and it definitely helps the feeding process. I start with a 320-400 grit paper/cloth on a wood dowel moving fore to aft to get the machine marks(frequently bad horizontal gouges from a dull tool) lessened/gone. Then I use a felt bob on my dremel at low speed with jewelers rouge(red) for the final polishing. I do not change the ramp profile at all, only clean up the rough machine work. If the feed ramp is really rough, it may be slowing the cartridge feeding process down enough that the main spring can not over come it. I would FIRST try a new mainspring, and then go from there if you need to.

Olle · 06-07-2012, 03:16 PM

Yeah, I believe the spring is the next step. The chamber is smooth and almost on the large side (like I said above, a cartridge will slide in an out by its own weight) and the problem seems to be occuring long before it seats in the chamber. I have done the "fingernail test" on the feed ramp without finding any burrs.

The movement seems to be rougher right as the cartridge exits the magazine, but this is what I see when I'm slowly lowering the toggle by hand so it's really not representative to what happens when you shoot. Its not any worse than I have seen in other pistols, and I hate to do irreversible things like feed ramp jobs anyway. Some more spring tension should hopefully do the trick.

rhuff · 06-08-2012, 03:36 PM

Sounds like a good plan. Keep us informed as to progress.

Olle · 07-04-2012, 12:07 AM

This is taking way too long, but that's the way it goes when you have too many projects going on.... Installed a new Wolff main spring this evening, together with the firing pin spring that came with it. I read up on it before I started, but it was actually easier to change the mainspring than I have seen described in some instructions. Maybe my long fingers helped, but it was just a matter of sticking a punch through the eye and pulling a bit. The proof will be in the proverbial pudding, will hopefully test fire tomorrow. Stay tuned.

rhuff · 07-04-2012, 04:34 PM

I wish you good luck with your new springs!! Let us know.

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06-07-2012, 01:38 PM	#1
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,315 Thanks: 2,753 Thanked 999 Times in 734 Posts	I, personally, would not change the feed ramp profile in any way, shape or form. I do polish the feed ramps(frame and barrel) on my shooters, and it definitely helps the feeding process. I start with a 320-400 grit paper/cloth on a wood dowel moving fore to aft to get the machine marks(frequently bad horizontal gouges from a dull tool) lessened/gone. Then I use a felt bob on my dremel at low speed with jewelers rouge(red) for the final polishing. I do not change the ramp profile at all, only clean up the rough machine work. If the feed ramp is really rough, it may be slowing the cartridge feeding process down enough that the main spring can not over come it. I would FIRST try a new mainspring, and then go from there if you need to.

06-07-2012, 03:16 PM	#2
Olle User Join Date: Feb 2010 Location: Tennessee Posts: 1,149 Thanks: 159 Thanked 664 Times in 318 Posts	Yeah, I believe the spring is the next step. The chamber is smooth and almost on the large side (like I said above, a cartridge will slide in an out by its own weight) and the problem seems to be occuring long before it seats in the chamber. I have done the "fingernail test" on the feed ramp without finding any burrs. The movement seems to be rougher right as the cartridge exits the magazine, but this is what I see when I'm slowly lowering the toggle by hand so it's really not representative to what happens when you shoot. Its not any worse than I have seen in other pistols, and I hate to do irreversible things like feed ramp jobs anyway. Some more spring tension should hopefully do the trick.

06-08-2012, 03:36 PM	#3
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,315 Thanks: 2,753 Thanked 999 Times in 734 Posts	Sounds like a good plan. Keep us informed as to progress.

07-04-2012, 12:07 AM	#4
Olle User Join Date: Feb 2010 Location: Tennessee Posts: 1,149 Thanks: 159 Thanked 664 Times in 318 Posts	This is taking way too long, but that's the way it goes when you have too many projects going on.... Installed a new Wolff main spring this evening, together with the firing pin spring that came with it. I read up on it before I started, but it was actually easier to change the mainspring than I have seen described in some instructions. Maybe my long fingers helped, but it was just a matter of sticking a punch through the eye and pulling a bit. The proof will be in the proverbial pudding, will hopefully test fire tomorrow. Stay tuned.

07-04-2012, 04:34 PM	#5
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,315 Thanks: 2,753 Thanked 999 Times in 734 Posts	I wish you good luck with your new springs!! Let us know.