Round not consistently extracting

4 Scale · 10-10-2018, 02:51 PM

Luger brass often has an oval shape, the case can slam into the side of the receiver on its way out. All my shooters do this to the cases. Your brass shape looks normal to me. I compared your spent brass to one of mine and it looks about the same as yours, including the dark rings nearer the mouth of the case.

rhuff · 10-10-2018, 03:13 PM

When you have your extractor installed in the breechblock, does it move up and down freely when you apply pressure to the claw? It should be under stiff spring pressure, but it still should move smoothly and freely. I am wondering if there is extractor binding and the claw is not fully engaging the extractor groove of the casehead. I have to ask if you cleaned out the extractor bed before installing the new extractor. That area can surely accumulate a lot of crud and lead to malfunction!! I am just thinking out loud.

mestguy182 · 10-10-2018, 03:31 PM

Quote:

Originally Posted by rhuff

When you have your extractor installed in the breechblock, does it move up and down freely when you apply pressure to the claw? It should be under stiff spring pressure, but it still should move smoothly and freely. I am wondering if there is extractor binding and the claw is not fully engaging the extractor groove of the casehead. I have to ask if you cleaned out the extractor bed before installing the new extractor. That area can surely accumulate a lot of crud and lead to malfunction!! I am just thinking out loud.

Thanks for the input. The extractor does move freely and smoothly, I'm actually wondering if it moves a little too freely, but I tested with the extractor spring that came with the gun and the Wolff one and they feel about the same to me, I even tried stretching the spring out but that didn't make much difference.

I did indeed clean out the channel for the extractor, it did have some gunk it that I had to spray down and get out with a pick tool.

mestguy182 · 10-10-2018, 03:29 PM

Quote:

Originally Posted by 4 Scale

Luger brass often has an oval shape, the case can slam into the side of the receiver on its way out. All my shooters do this to the cases. Your brass shape looks normal to me. I compared your spent brass to one of mine and it looks about the same as yours, including the dark rings nearer the mouth of the case.

That's very reassuring to know, gives me hope that it's not the head space. Thank you!

10-10-2018, 03:13 PM	#2
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,315 Thanks: 2,757 Thanked 999 Times in 734 Posts	When you have your extractor installed in the breechblock, does it move up and down freely when you apply pressure to the claw? It should be under stiff spring pressure, but it still should move smoothly and freely. I am wondering if there is extractor binding and the claw is not fully engaging the extractor groove of the casehead. I have to ask if you cleaned out the extractor bed before installing the new extractor. That area can surely accumulate a lot of crud and lead to malfunction!! I am just thinking out loud. __________________ Need DWM breechblock #21

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

10-10-2018, 02:51 PM	#1
4 Scale User Join Date: Nov 2014 Posts: 544 Thanks: 194 Thanked 490 Times in 251 Posts	Luger brass often has an oval shape, the case can slam into the side of the receiver on its way out. All my shooters do this to the cases. Your brass shape looks normal to me. I compared your spent brass to one of mine and it looks about the same as yours, including the dark rings nearer the mouth of the case.