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  #1  
Old 02-12-2020, 03:07 PM
jiminaz jiminaz is offline
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Magazine Malfunction Update

I posted several months ago about a feeding issue I was having with my Rock Island Armory M1911-A1 Tactical II 9mm. The factory magazine wouldn't feed properly when loaded with a full 10 rounds. The 1st, 2nd and sometimes 3rd round would nose dive into the feed ramp. The gun would work properly with only 7 rounds in the mag. The factory mags are Mec-Gar. I tried several different springs with no luck. Then I purchased 2 Metal Form 10 round mags and had the exact same problem. Although they are a better quality magazine the springs weren't any better and the problem remained. I did more research and decided to try Dawson Precision mags. I ordered one to try along with two of their extra power mag springs that they say will work in the Metal Form mags. When I got the Dawson Precision mag I compared it to the Metal Form mag and they have exactly the same body, follower base pad etc. The only difference was the spring. The Dawson mag functioned perfectly and when I put the Dawson springs into the Metal Form mags they too functioned 100%. I just came back from the range after firing 250 rounds with no problems. Hopefully this information will help anyone having a similar problem.
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  #2  
Old 02-12-2020, 07:54 PM
Deyomatic Deyomatic is offline
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Sounds like a real nightmare. Are you sure that nothing else is amiss? Mec Gar and Metal Form are big names in the magazine game.
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  #3  
Old 02-13-2020, 06:50 AM
yeti yeti is offline
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Maybe it really is just a spring issue, but much like Deyo I am skeptical.
Perhaps check your extractor prep and tension also.
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  #4  
Old 03-16-2020, 11:27 PM
jiminaz jiminaz is offline
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Since my last post I've shot an additional 500 rounds with no problems what so ever. It seems it was truly a spring issue. When you compare the springs and followers of the Mec-Gar and the Dawson Precision the differences are obvious. Dawson springs really make a difference. Also the followers are metal instead of the plastic used by Mec-Gar. If the Metal form mags came with a better spring they would work well also. The Metal form mags are identical to the Dawson mags except for the spring. After I replaced the Metal Form springs with the Dawson springs they function perfectly as well. Since I made the change to the Dawson mags and springs I've shot 750 trouble free rounds. There was never an issue with the extractor. The problem was with the first three rounds feeding without nose diving into the feed ramp. With 7 rounds loaded in the mag they function like they should but I wanted to shoot a full 10 rounds. The Dawson Precision mags and springs made the difference.

Last edited by jiminaz; 03-16-2020 at 11:37 PM.
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  #5  
Old 03-16-2020, 11:38 PM
jiminaz jiminaz is offline
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Quote:
Originally Posted by yeti View Post
Maybe it really is just a spring issue, but much like Deyo I am skeptical.
Perhaps check your extractor prep and tension also.
Since my last post I've shot an additional 500 rounds with no problems what so ever. It seems it was truly a spring issue. When you compare the springs and followers of the Mec-Gar and the Dawson Precision the differences are obvious. Dawson springs really make a difference. Also the followers are metal instead of the plastic used by Mec-Gar. If the Metal form mags came with a better spring they would work well also. The Metal form mags are identical to the Dawson mags except for the spring. After I replaced the Metal Form springs with the Dawson springs they function perfectly as well. Since I made the change to the Dawson mags and springs I've shot 750 trouble free rounds. There was never an issue with the extractor. The problem was with the first three rounds feeding without nose diving into the feed ramp. With 7 rounds loaded in the mag they function like they should but I wanted to shoot a full 10 rounds. The Dawson Precision mags and springs made the difference.
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  #6  
Old 03-17-2020, 09:04 AM
Magnumite Magnumite is offline
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I bought a designed 10 round 9mm mag awhile back. I don’t recall if it was Metalform or Mecgar - I want to say Metalform. It would choke only on the first round when fully loaded to 10 rounds. Anyway, I bought the extra power Wolf mag springs, trimmed to length and the problem went away. I have come to the conclusion that within sensible limits you can’t have too much spring in a 1911. Highly tuned bullseye softball guns are another story. Maybe even soft loaded steel guns.

I don’t have issues with 9 round 9mm nor seven round 45 Metalforms, and some 8 rounders, as purchased. But when the springs wash out I use the Wolf Extra Power mag springs.
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Last edited by Magnumite; 03-17-2020 at 09:08 AM.
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  #7  
Old 03-28-2020, 07:49 AM
bcdechert bcdechert is offline
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Just a few thoughts. There are a lot of things that can be the cause of feeding problems, and they don't ALL start with the magazine. It could be barrel ramp down, and that could be caused by the barrel bed, the link, the slide stop pin. I could be caused by the angle of the ramp into the chamber. It could be caused by the recoil spring itself. A surprising thing is that it could be caused by a stutter in slide recoil because the disconnector is too high. It could be caused by excessive spring tension in the magazine spring. It could be caused by feed lips that are too tight. It could be caused by follower angle. It could be caused by where the mag locks and how much play there is in the magazine. And this is just a short list. Expecting to just buy a new magazine and solve the problem without any other diagnostic work is just throwing good money after bad.
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  #8  
Old 03-28-2020, 11:42 AM
Magnumite Magnumite is offline
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True. And nosediving would be a clue to eliminate much on the laundry list.
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  #9  
Old 04-02-2020, 09:08 AM
jiminaz jiminaz is offline
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Bottom line the Dawson springs seemed to cure the problem. The mags now functions like they should with a full 10 rounds loaded. Unfortunately the Dawson springs don't fit the Mec-Gar mags due to the shape of the feed ramp.
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  #10  
Old 04-02-2020, 09:55 AM
Magnumite Magnumite is offline
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Within reason and caveat to special requirements, I think strong springing a 1911 mag is a good think. That is one of my first go to's when nose dives and misfeeds occur.

You and "adjust" that upper coil to fit the follower. Be careful not to kink or overbend, beng too much, the coil. I have to do this when fitting some extra power Wolff mag springs to some 10 round 45 single stack mags.
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  #11  
Old 04-03-2020, 08:38 AM
7 Ring 7 Ring is offline
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I am glad I saw this thread. I've had issues with Kimber, Mec-Gar and unmarked 9mm magazines that came with my Springfield R.O. I have 3 MetalForm magazines that work perfectly.

I've purchased sights and such from Dawson Precision in the past. I am going to try their magazine springs and see if that makes the remainder of the magazines usable.
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  #12  
Old 04-07-2020, 08:34 PM
jiminaz jiminaz is offline
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Quote:
Originally Posted by 7 Ring View Post
I am glad I saw this thread. I've had issues with Kimber, Mec-Gar and unmarked 9mm magazines that came with my Springfield R.O. I have 3 MetalForm magazines that work perfectly.

I've purchased sights and such from Dawson Precision in the past. I am going to try their magazine springs and see if that makes the remainder of the magazines usable.
Good luck they worked great for me. Post your results after you have a chance to test the Dawson springs.
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  #13  
Old 04-15-2020, 04:34 PM
7 Ring 7 Ring is offline
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I received my order from Dawson yesterday and installed a new magazine spring in the MecGar magazine. It feeds a little better, but not 100%. I put new springs in the Kimber and Springfield magazines and it made no difference. When fully loaded, the first and second cartridge in the Kimber and Springfield magazines comes out nose down.

I also ordered some Tripp Research 9mm Flex Followers to see if that would make a difference. Patent # 6,560,907 is stamped on the followers. The same number is stamped on the Kimber and Springfield magazine followers. Replacing the followers with the Tripp Research followers made no difference, so I put the OEM followers back in the magazines.

I guess the non ramped barrel RIA I have is a picky eater with all but the MetalForm magazines. With the MetalForm magazines, Speer Gold Dot 124g Hollow Points and Federal 124g HST Hollow Points will feed reliably. All magazines work perfectly in my Springfield Range Officer, but it has a ramped barrel.
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