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Old April 22, 2015, 09:48 AM   #1
simo
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xdm 9 malfunction

Hi everybody, it's the first time i ask a question on this forum and i'm writing from Italy, so i apologise for my bad english. Let's get to the point: yesterday i was shooting my xdm 9 (9x21, the italian 9x19) and, after 50 rounds of factory ammo (without any jams), i decided to try my self-loaded ammunition and, about every 20 rounds, the same malfunction occurred. it was like a "double feed" but even the cartidges left in the barrel was hot: after correctly firing a round, the second one was chambered but the slide didn't close for about 2 centimeters (about 1 inches), as if the round on the top of the magazine was preventing the closing of the slide. removing the magazine (with a bit of strenght), the slide returned to normal position and the round was chambered correctly. Here some additional information:
1) that was the first time i tried a good amount of self-loaded ammo in that caliber (differently, my self loaded ammo work good in my glock 23 .40)
2) pistol and magazines were not oiled and weren't much clean (but not even much dirty)
3) the problem seemed to occur about in the middle of the mag
4) I've never had any problem with over 2000 factory ammo
5) because of the strongness of xdm mag's springs, it's possible that, loading full magazines (19 rounds each), i didn't put rounds in in the correct way.
hope you can help me, thank you very much!
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Old April 22, 2015, 10:12 AM   #2
g.willikers
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Welcome to the forum.
If you could post a picture of the jam, that would be a big help.
In the meantime, check the overall length of your reloads and compare them to factory ammo.
And your English is just fine.
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Old April 22, 2015, 10:36 AM   #3
simo
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Unfortunately i've not any photo..my cartridges are exactly 1 mm shorter than fiocchi 124 grains factory ammo. My gunsmith suggested me to make reloaded ammo a bit shorter, just to be sure that cartridges fits the chamber even with the minimal variations in lenght from a single cartridge to another. Do you think the problem is there? thank you!
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Old April 24, 2015, 08:59 AM   #4
odugrad
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So is the slide not going into battery? Could it be the ammo is a little low-powered?
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Old April 24, 2015, 09:18 AM   #5
g.willikers
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Since the gun works as it should with factory ammo, at least you know it's not the gun that is at fault.
And that makes things easier to diagnose.
Try playing around with both the amount of gunpowder in the reloads, and the overall length.
It's probably one or the other, or a combination.
Usually, I find that using the longest cartridge length that runs up and down in the magazine and also fits the chamber works best in most auto loading pistols.
Since your gun is made for the 9x21, the information for the standard 9x19 might not apply.
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Old April 24, 2015, 02:15 PM   #6
simo
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thank you everybody! i think i'mgonna try to make my cartidges a bit longer and i'll let you know the results!
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Old April 24, 2015, 06:36 PM   #7
marine6680
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It may be the loads are a bit weak as well. I am not sure about load info for that round, but if you are on the lower end, and not at least into the middle of the minimum and maximum charge, you may need more powder.

Many semi auto pistols do not do well with weak ammo.
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Old April 25, 2015, 04:00 PM   #8
Ralph Allen
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Try a "plunk" test with your reloads. On your first round reloadin, drop that round into the pistol barrel that you have removed from the gun. If it goes "plunk" and sets in the chamber at the correct depth, then your problem could possibly lie with the overall power of your reloads.
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Old April 30, 2015, 02:28 AM   #9
simo
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ok, yesterday i went to the range: 150 rounds trough my HS and zero problem! It looks the problem was the loading charge, thank you everybody!
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