The Continuing Mag Problem, Part2 w/Pics

[Charlie Xray]

Factory 230 gr hardball test -

Loaded four magazines. Two were the ones that came with the pistol with the original factory springs reinstalled. Two were new factory mags I bought through a vendor and had the AGP extra power springs.

No failures of any kind.

All mags were loaded with 13 rounds except one of the original mags with the standard springs got 12 rounds. That mag had every other round's bullet blackened with a Sharpie. Fired one round and hand ejected the next one (with blackened bullet), fired next, hand ejected, etc. I ended up with 6 test bullets that had been fed through the normal firing cycle. See two pics below.

The harder surface of the copper jacket does not show the contact points as well but well enough they are visible on most rounds. The third arrow near the tip is where I think the round is encountering a burr at the relief cut in the barrel hood for the loaded chamber indicator.





I am avoiding any more mods to the pistol until SA has a chance to look at it. All I have done so far is the bevel on the forward inside edge of the magazines and polished the feed ramps.

Next up I will remeasure every measurement to confirm them, compare those to whatever comes in from others, and post the results here. I have gotten access to a friend's XD45 but it is 45 miles away right now.

More when I have it.

CX

[ThumperIII]

Shoots just about everything factory: wide mouth HP, RN, FN, TC with copper cladding. Have not tried lead yet. So no real challenges so far. Will not try SWC due to potential mag damages even if it feeds. Have Rainier and Berry's (plated) and Precision Delta (clad) for reloading when I start. Stock springs in stock mags and AGP springs with AGP mag extenders. Measurements taken with stock barrel.



A TOP OF RAIL TO TOP OF EXTENSION FOR RAMP 0.222


B DEPTH OF Lock Block Center Cut 0.111


C HEIGHT OF BREACH FACE 0.755


D VERTICAL HEIGHT OF RAMP (CHAMBER TO BASE) 0.184


E BARREL DROP BELOW SLIDE 0.124


F TOP OF BARREL TO BASE OF CARTRIDGE 0.641-0.657
depending on fit in chamber & head dia of case


**************************************************

G TOP OF BARREL TO TOP OF CHAMBER 0.167


H CHAMBER THROAT DIA 0.479


I TOP OF BARREL TO BOTTOM OF RAMP 0.835


D+G+H = I 0.184 + 0.167 + 0.479 = 0.830
(0.005 dif due to rounding of measurements past 3 decimals)

slide removed. Full mag inserted in frame.

J TOP OF FRAME EDGE TO TOP OF HIGHEST POINT OF MAG 0.289


K TOP OF FRAME EDGE TO TOP OF HIGHEST POINT OF TOP ROUND IN MAG 0.400
(a check on how the mag lips are adjusted)

[DPGDirk]

Signing on for updates.

My XD-45 is doing this same thing exactly. Very frustrating.

My earlier model XD-45 shot flawlessly, even after 6500+ rounds. The mag springs were really soft. Gun ran like a swiss watch.

I'd like to hear what the fix is. Sure seems to be a factory fitment/maching issue, but it would be nice if someone figures out a way to fix this.
I have so much money in my gun that I'd rather fix it than replace it.

I've even thought about switching to an XD-9mm, so- as a .45 guy, you know I'm frustrated.

[fritzmeister]

So I did some measurements at home with mine. I will post them up later when I have some time.

My 45 ran great with brass cased UMC stuff. It seems that the Wolf garbage is my only sticking point.

Brass = reliable feeding

Mild steel = FTFs

[DPGDirk]

Mine is doing it with Winchester white box, Blazer Brass, and various reloads.
It's not the ammo.
It also does it with multiple mags.

[fritzmeister]

I guess I won't be posting my measurements of my XD. I left them at home. I will say that they were similar to the "good" XD measurements here (I forget whose they were). I also want to say that my 45 looked like the "good" one pictured as well. The rim of the case was low enough in the chamber that I couldn't really see it.

I measured some ammo as well to see if it could possibly be that. Here's what I got:

Wolf:
1.268
1.269
1.267
1.268
1.268
1.264
1.264
1.266
1.264
1.270

UMC:
1.256
1.256
1.260
1.253
1.270
1.258
1.259
1.256
1.255
1.270

Hornady (self defence +P):
1.233
1.231
1.214
1.230
1.231
1.230
1.229
1.229
1.230
1.231

A-Zoom snap caps (why not):
1.266
1.265
1.258
1.263
1.254
1.265

The brass stuff was 100% reliable yesterday out shooting. The Wolf will FTFeed several rounds in the very first mag wether the pistol is clean or not. The UMC stuff was ran through a dirty XD . My thoughts were that the Wolf was too long or too wide or something else. I don't know exactly what the specs are for 45 ACP cartridge dimensions, and I didn't have it avaialble to me this weekend either. I also found that the Wolf was a little larger diameter around the rim and the indentation where the extractor would fit than the UMC. Maybe this is part of the problem? I haven't ran any WWB or Blazer Brass so I can't comment on that.

Comments?

[DPGDirk]

Well, my baby left for SA's repair dept today.

We'll see...

[ArmyBound]

i read on another thread that xd put out new magazines that solved this problem it only happens with the .45 acp because the magazine seperates slightly where it is connected one guy said he hit his with a hammer and it eleviated the problem sorry if someone has said this already

[thelongone13]

Originally Posted by ArmyBound

i read on another thread that xd put out new magazines that solved this problem it only happens with the .45 acp because the magazine seperates slightly where it is connected one guy said he hit his with a hammer and it eleviated the problem sorry if someone has said this already

I did the hammer trick, but that was due to bulging and making the magazine unable to fall free. This is a whole other beast.

[jake99]

Kind of holding my breath here, haven't had problems at all, wondering when I will...