9mm Parabellum Case damage

ALBEITAR · 05-09-2013, 01:10 PM

Hi to all!
I have recently shot my new 6" Mauser 29/70 with handloaded ammo (4,7 grains Vectan BA9- H&N 125grains TC .356" 1.145" OAL), and most ejected cases have a damage near the mouth, it looks like they crash with the extractor ¿?
Wonder if some member has seen this before and if it is normal shooting this gun. I believe that load isn´t too hot, but I´m thinking about reduce it a little... Any ideas?

Here are some photos

rhuff · 05-09-2013, 04:14 PM

This is quite common, at least on my Mauser Parabellums. It is not a problem, and the sizing die will straighten it right out for another loading.

I can't speak to your loading figures, as that powder is not available in USA.

saab-bob · 05-10-2013, 02:36 AM

My Mauser Parabellum does the same thing. No real problem,just annoying.
Bob

alvin · 05-10-2013, 07:13 AM

What's the cause of this? Any thought?

ALBEITAR · 05-10-2013, 01:56 PM

You are right, rhuff, they look quite decent after sizing. I was worried because I select .749" - .750" brass for precision shooting and this is a tedious work to use them only one time. I supose brass live will be shorter than usual, but I will assume it.

Vlim · 05-10-2013, 02:56 PM

Take a look at the extractor spring (small coil spring). I had similar markings on a VoPo P08's spent cases. After replacing the extractor spring, ejected cases went noticably higher (rather than landing in my face and on top of my head), and the cases ejected without furhter damage.

Dwight Gruber · 05-11-2013, 11:48 AM

The ejector on a Luger pistol protudes through the breechblock face at its lower right, pushing the spent case up and to the left where the case mouth collides with the inside upper left frame rail as it extis the pistol, causing this case damage. This is common occurance. Floating around the internet somewhere, there is a slo-motion video of a Luger firing clearly showing this behavior (sorry, I don't have a link off-hand).

--Dwight

mrerick · 05-11-2013, 12:18 PM

Dwight, Is it this video:

http://www.youtube.com/watch?v=T8C5Mjh4l54

Marc

Dwight Gruber · 05-12-2013, 06:03 PM

No. It was a video made by the Kurrzeit Corporation, which manufactures high-speed video equipment. It is not currently on their website.

--Dwight

05-09-2013, 01:10 PM	#1
ALBEITAR New User Join Date: Apr 2012 Posts: 2 Thanks: 3 Thanked 0 Times in 0 Posts	9mm Parabellum Case damage Hi to all! I have recently shot my new 6" Mauser 29/70 with handloaded ammo (4,7 grains Vectan BA9- H&N 125grains TC .356" 1.145" OAL), and most ejected cases have a damage near the mouth, it looks like they crash with the extractor ¿? Wonder if some member has seen this before and if it is normal shooting this gun. I believe that load isn´t too hot, but I´m thinking about reduce it a little... Any ideas? Here are some photos

05-10-2013, 02:36 AM	#3
saab-bob User Join Date: Jul 2009 Location: So Cal Posts: 459 Thanks: 774 Thanked 143 Times in 87 Posts	My Mauser Parabellum does the same thing. No real problem,just annoying. Bob __________________ "I think,therefore I own guns"

05-11-2013, 12:18 PM	#8
mrerick Super Moderator - Patron LugerForum Life Patron Join Date: Dec 2009 Location: Eastern North Carolina, USA Posts: 3,900 Thanks: 1,370 Thanked 3,094 Times in 1,503 Posts	Dwight, Is it this video: http://www.youtube.com/watch?v=T8C5Mjh4l54 Marc __________________ Igitur si vis pacem, para bellum - - Therefore if you want peace, prepare for war.

05-09-2013, 04:14 PM	#2
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,270 Thanks: 2,686 Thanked 958 Times in 704 Posts	This is quite common, at least on my Mauser Parabellums. It is not a problem, and the sizing die will straighten it right out for another loading. I can't speak to your loading figures, as that powder is not available in USA.

05-10-2013, 07:13 AM	#4
alvin User Join Date: Jul 2007 Location: US Posts: 3,843 Thanks: 132 Thanked 729 Times in 438 Posts	What's the cause of this? Any thought?

05-10-2013, 01:56 PM	#5
ALBEITAR New User Join Date: Apr 2012 Posts: 2 Thanks: 3 Thanked 0 Times in 0 Posts	You are right, rhuff, they look quite decent after sizing. I was worried because I select .749" - .750" brass for precision shooting and this is a tedious work to use them only one time. I supose brass live will be shorter than usual, but I will assume it.

05-10-2013, 02:56 PM	#6
Vlim Moderator Lifetime LugerForum Patron Join Date: Oct 2002 Location: Europe Posts: 5,032 Thanks: 1,018 Thanked 3,873 Times in 1,184 Posts	Take a look at the extractor spring (small coil spring). I had similar markings on a VoPo P08's spent cases. After replacing the extractor spring, ejected cases went noticably higher (rather than landing in my face and on top of my head), and the cases ejected without furhter damage.

05-11-2013, 11:48 AM	#7
Dwight Gruber User Join Date: Jun 2002 Location: Portland, Oregon Posts: 3,889 Thanks: 0 Thanked 1,281 Times in 423 Posts	The ejector on a Luger pistol protudes through the breechblock face at its lower right, pushing the spent case up and to the left where the case mouth collides with the inside upper left frame rail as it extis the pistol, causing this case damage. This is common occurance. Floating around the internet somewhere, there is a slo-motion video of a Luger firing clearly showing this behavior (sorry, I don't have a link off-hand). --Dwight

05-12-2013, 06:03 PM	#9
Dwight Gruber User Join Date: Jun 2002 Location: Portland, Oregon Posts: 3,889 Thanks: 0 Thanked 1,281 Times in 423 Posts	No. It was a video made by the Kurrzeit Corporation, which manufactures high-speed video equipment. It is not currently on their website. --Dwight