Brass deformation???

G.T. · 03-11-2018, 09:24 AM

Hi Rick! I very much appreciate the input! Here's a little more to ponder... when using a standard MEC-GAR mag, the ejection is consistent, robust and straight up?... When the problems occur is with a drum.... and only once or twice in a string.. BUT, it is very random, the gun may jam on the third round.. or fourteenth or the thirtieth round???

.. Very random and inconsistent... Always the same, smokestack with the next round already feeding into the chamber... I have switch out the 9MM mainsprings... weaker and stronger? No Improvement... I will attend to the ejector and see if a different one and spring might give me some clue?.... It looks perfect?... but we will see, and, I may be blind to something hidden... I'm also switching pistols and drums!!!!!

no change?.. Thanks again Rick, always good to hear from you!

.. til...lat'r.....GT...

Rick W. · 03-11-2018, 09:59 AM

I suspect that you and Vlim are way ahead of me on all of this with my simplistic viewpoint. You all will get there I am sure. There is always real help here I have found over the years getting chewed on and sometimes really to the point help.......

When I did my two Ruger No.1's in rimfire, I was having issues with the extractor/ejector. I was counseled by a NZ armorer that the hook on my extractor was too sharp and was marking the rim as an indicator, so I dulled it; and has worked for 10 years now correctly. Guess we all hear that the extractor tip should be sharp to grab the rim firmly, but perhaps there is something to be able to let go smoothly when the ejector hits; tis somewhat environment driven.

I have not handled a drum, real or otherwise, for a long time and then only casually as the collector was careful with who/what messing with his stuff. One of the times cash did not talk....

One might peruse the magazine top structure as a shot in the dark, take a few measurements as to angle and curvature versus the two top structures(reg mag vs drum), do one think the release from the magazine is the same, or does the drum magazine lips sit higher in the pistol.

As a last shot in the real dark, do you think that the marks are after the magazine loads the pistol(extractor/ejection) or are the marks made on entry into the chamber; I would suspect not, but always I find little surprises that nailed me before.....

If the pistol functions with a standard mag ok, and we think that the loading of the case is ok into the chamber; and that the issue is going out; then the extractor/ejector properties may come into play as Vlim suggested. Springs, way too sharp(previous unknown enhancements perhaps?), or hook angles might be viewed. Is there anything different physically with the drum top versus standard magazine? Sit higher, lips tighter(sometimes saves ships), or perhaps something in the spring tension of the drum(long shot).

Sorry to be so vague and some say....wordy, I have confidence that you all are on top of the issue and will solve it in spite of my babbling. You will find it, if not already done so.

03-11-2018, 09:24 AM	#1
G.T. Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: Chandler Arizona Posts: 3,533 Thanks: 1,335 Thanked 3,718 Times in 1,016 Posts	extraction woes.... Hi Rick! I very much appreciate the input! Here's a little more to ponder... when using a standard MEC-GAR mag, the ejection is consistent, robust and straight up?... When the problems occur is with a drum.... and only once or twice in a string.. BUT, it is very random, the gun may jam on the third round.. or fourteenth or the thirtieth round??? .. Very random and inconsistent... Always the same, smokestack with the next round already feeding into the chamber... I have switch out the 9MM mainsprings... weaker and stronger? No Improvement... I will attend to the ejector and see if a different one and spring might give me some clue?.... It looks perfect?... but we will see, and, I may be blind to something hidden... I'm also switching pistols and drums!!!!! no change?.. Thanks again Rick, always good to hear from you! .. til...lat'r.....GT...

03-11-2018, 09:59 AM	#2
Rick W. User Join Date: Jun 2002 Posts: 339 Thanks: 81 Thanked 359 Times in 198 Posts	I suspect that you and Vlim are way ahead of me on all of this with my simplistic viewpoint. You all will get there I am sure. There is always real help here I have found over the years getting chewed on and sometimes really to the point help....... When I did my two Ruger No.1's in rimfire, I was having issues with the extractor/ejector. I was counseled by a NZ armorer that the hook on my extractor was too sharp and was marking the rim as an indicator, so I dulled it; and has worked for 10 years now correctly. Guess we all hear that the extractor tip should be sharp to grab the rim firmly, but perhaps there is something to be able to let go smoothly when the ejector hits; tis somewhat environment driven. I have not handled a drum, real or otherwise, for a long time and then only casually as the collector was careful with who/what messing with his stuff. One of the times cash did not talk.... One might peruse the magazine top structure as a shot in the dark, take a few measurements as to angle and curvature versus the two top structures(reg mag vs drum), do one think the release from the magazine is the same, or does the drum magazine lips sit higher in the pistol. As a last shot in the real dark, do you think that the marks are after the magazine loads the pistol(extractor/ejection) or are the marks made on entry into the chamber; I would suspect not, but always I find little surprises that nailed me before..... If the pistol functions with a standard mag ok, and we think that the loading of the case is ok into the chamber; and that the issue is going out; then the extractor/ejector properties may come into play as Vlim suggested. Springs, way too sharp(previous unknown enhancements perhaps?), or hook angles might be viewed. Is there anything different physically with the drum top versus standard magazine? Sit higher, lips tighter(sometimes saves ships), or perhaps something in the spring tension of the drum(long shot). Sorry to be so vague and some say....wordy, I have confidence that you all are on top of the issue and will solve it in spite of my babbling. You will find it, if not already done so.