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Author Topic: Mag dislodged while firing  (Read 10604 times)

Offline deercop

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Mag dislodged while firing
« on: January 05, 2012, 08:17:19 PM »
Had a new issue show up today.  First time I've shot my R9 in months, got some new HST ammo and wanted to try it out.  While firing, the magazine would occasionally pop loose from the mag catch and drop partially down.  Not every time, but often enough to be very disconcerting.  This happened with my new Federal 124 HST, my old carry ammo Ranger 147, and Winchester White Box 115. 

I am positive my pinky is not hitting the mag release, I had a coworker watch while I was being very careful to avoid that.  I'm wondering if inertia is causing the mag catch to "stay in place" while the gun recoils "around it"?  Of late my psoriatic arthritis seems to be getting worse, but today was definitely a "good day" as far as that is concerned, but I guess it's possibly a factor.

Anyone had this problem before? 
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Offline Koby

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Re: Mag dislodged while firing
« Reply #1 on: January 05, 2012, 09:57:41 PM »
I had the same issue when I fired mine for the first few times.  At first, I thought I must be hitting the mag release with my palm or pinkie, but continued shooting and was quite sure that was not happening.  After a several outings and a few boxes of ammo, I finally learned what to expect with regards to recoil, and how to hold on to this thing.  I have not experienced this issue since, and my R9 has been working flawlessly.  Perhaps the absence from your R9 was just enough make it somewhat unfamiliar.  Maybe your PA is just enough of a variable to make a difference.  Keep practicing, and you will develop the technique to overcome.   
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Offline backupr9

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Re: Mag dislodged while firing
« Reply #2 on: January 05, 2012, 10:06:21 PM »
I've never had this happen with two different R9's, nor have I heard of this before.  Seems like recoil backwards would increase the grip of the mag release.  Muzzle flip however might account for this.  Both of my pistols had very tight mag releases.  Have you tried firing with a different magazine?
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Offline Koby

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Re: Mag dislodged while firing
« Reply #3 on: January 05, 2012, 10:29:21 PM »
Exactly, muzzle flip.  The rotational force may be overpowering the mag release spring tension.  I tried mine with several mags early on and experienced the same problem.  The problem was me.  Maybe it is the mag release spring,  but before sending it in to Rohrbaugh, I would shoot it some more to make sure is is not grip technique. 
« Last Edit: January 05, 2012, 10:31:10 PM by Koby »
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Offline deercop

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Re: Mag dislodged while firing
« Reply #4 on: January 06, 2012, 10:29:40 AM »
This happened with 3 different mags.  I have owned this firearm for several years, and never experienced this before.  Also, I had a few light primer strikes yesterday, with previously reliable Winchester ammo. 

Looking at the parts diagram here,  http://www.rohrbaughfirearms.com/pdf/DisassemblyLubeBroch.pdf , it appears that the hammer spring also functions as the spring for the mag catch.  Perhaps if this spring has become weaker for whatever reason, that could account for both the light primer strikes as well as the mag releasing?
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Offline tracker

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Re: Mag dislodged while firing
« Reply #5 on: January 06, 2012, 03:08:24 PM »

That makes sense but the factory could address that question best. If the spring is the culprit there must be some previous history.
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Offline deercop

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Re: Mag dislodged while firing
« Reply #6 on: January 06, 2012, 03:14:16 PM »
It is being packaged for shipment for warranty service.
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Offline tracker

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Re: Mag dislodged while firing
« Reply #7 on: January 06, 2012, 03:18:12 PM »

Please keep us posted on the fix if you find out.
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Offline deercop

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Re: Mag dislodged while firing
« Reply #8 on: January 10, 2012, 04:03:36 PM »
It is now on it's way home.

They said there was a burr somewhere in the firing pin area, which caused the firing pin spring to occasionally bind, causing the intermittent light primer strikes.  Also replaced the recoil system.  No problems noted on the lower end, everything in spec.
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Offline yankee2500

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Re: Mag dislodged while firing
« Reply #9 on: January 10, 2012, 04:51:23 PM »
Sounds like good news, looking forward to the range report after you get it back. :D
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Offline backupr9

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Re: Mag dislodged while firing
« Reply #10 on: January 11, 2012, 09:25:50 AM »
Quote from: deercop on January 10, 2012, 04:03:36 PM
It is now on it's way home.

They said there was a burr somewhere in the firing pin area, which caused the firing pin spring to occasionally bind, causing the intermittent light primer strikes.  Also replaced the recoil system.  No problems noted on the lower end, everything in spec.

Anyone have an idea why it would develop a "burr" in the firing pin area after being fired successfully in the past many times?
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Offline kjtrains

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Re: Mag dislodged while firing
« Reply #11 on: January 11, 2012, 09:32:37 AM »
Quote from: deercop on January 10, 2012, 04:03:36 PM
It is now on it's way home.

They said there was a burr somewhere in the firing pin area, which caused the firing pin spring to occasionally bind, causing the intermittent light primer strikes.  Also replaced the recoil system.  No problems noted on the lower end, everything in spec.

Great news, dc.  Thanks.

Quote
Quote from: backupr9 on January 11, 2012, 09:25:50 AM

Anyone have an idea why it would develop a "burr" in the firing pin area after being fired successfully in the past many times?

backup.  Some wear in the area of the burr and with the tremendous heat could have caused a metal shaving to fuse creating the burr;  why after many successful firings that it occurred.........who knows; glad it's now fixed and on the way home.
« Last Edit: January 11, 2012, 10:00:51 AM by kjtrains »
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Offline AmmoToad

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Re: Mag dislodged while firing
« Reply #12 on: January 11, 2012, 11:54:57 PM »
Ditto everything KJ said...
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Offline backupr9

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Re: Mag dislodged while firing
« Reply #13 on: January 12, 2012, 08:53:45 AM »
That kind of random failure in a self-defense pistol is a little bothersome!  Any other documented occurrences know to the forum?
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Offline Dr. Gonzo

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Re: Mag dislodged while firing
« Reply #14 on: February 04, 2012, 04:24:25 PM »
Quote from: backupr9 on January 11, 2012, 09:25:50 AM
Quote from: deercop on January 10, 2012, 04:03:36 PM
It is now on it's way home.

They said there was a burr somewhere in the firing pin area, which caused the firing pin spring to occasionally bind, causing the intermittent light primer strikes.  Also replaced the recoil system.  No problems noted on the lower end, everything in spec.

Anyone have an idea why it would develop a "burr" in the firing pin area after being fired successfully in the past many times?

probably brass debris. It's happened to me before with cheaper ammo, brass from the case actually flakes off. I use AmericanEagle for practice and Gold Dot for carry, neither of which give me any trouble. A can of compressed air can blow that stuff right out when you break it down and clean it  ;)
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