This is a discussion on Magazine Issues within the P365 forums, part of the SIG Sauer Pistols category; A few weeks back I bought a 365 XL. I took it out yesterday for the first time. I put 200 rounds thru it. I ...
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|07-12-2020, 05:53 PM||#1|
A few weeks back I bought a 365 XL. I took it out yesterday for the first time. I put 200 rounds thru it.
I have two 15 round mag and a 12 round mag. All are Sig brand. I have a Pro Ledge Base plate from Tactical Development for the 12.
The first time I loaded the 12 round magazine I got about 3-4 rounds in and the spring got wonky and lost all of its spring. The bullets were just laying it in. I got them out and the spring returned to normal. I loaded it probably 5-6 more times with zero issues.
On my 15 round mags: twice I had issues with the base just coming off. Once while shooting. The other time I was just loading. Iím not sure if it was the same mag that messed up or each one messed up. I donít have them marked. Each time was in the first couple of times thru. No more issues the next 2-3 times I shot them.
Iíve heard that the spring on the 365 mags were very stiff. Do you think this was part of the normal break in for the mags? Or should I send them in to get looked at?
Like I said, the all issues were in the first couple of times being loaded/shot. The 12 was the first time. I believe the time when the 15 round came apart while shooting was its first cycle as well.
Thanks for any advice
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|07-12-2020, 06:55 PM||#2|
Join Date: Jul 2020
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|07-13-2020, 06:34 AM||#6|
I changed the base plate on the 12 round mag. I like the pinky extension. It helps me have a much better grip.
And I could understand how that possibly could be the problem. But I only did it on the 1 mag.
I still have 2 factory 15 round mags that had problems. So even if I had it incorrectly installed (which wouldnít be a surprise for me. But it is on there correctly). That still doesnít explain why I had issues with the OEM 15 round mags with no changes.
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|07-13-2020, 06:56 AM||#7|
Join Date: Aug 2019
Location: Orange County, Ca.
Likes Received 181
Your mags probably have small burrs INSIDE the LEFT cutout from the metal stamping process.
The follower is plastic and the left edge tends to snag that left cutout.
Sandpaper the follower a bit just to round over the left side where it contacts the cutout.
Then deburr the INSIDE top and bottom of that metal cutout.
Use a tiny file, diamond file, nail file, exacto knife blade, or any tool that will get inside to smooth over that cutout burr at the top and bottom edges.
|07-13-2020, 02:38 PM||#8|
Join Date: Sep 2019
Likes Received 305
J_P, how are you seating the rounds? I know it is a wrestling match with a new mag. This is another argument for using a MagLula; it pushes straight down on the follower and the bullet stack.
|07-14-2020, 06:39 AM||#9|
|07-14-2020, 04:45 PM||#10|
Join Date: Dec 2018
Likes Received 244
As others have said, there can be very tiny burrs on the inside of the mag at the cutouts - I had several like this. The worst 2 I returned to sig for replacement. The others I just finger cycled the follower up/down maybe 40 - 50 times to "wear in" the follower. You can see where the follower (plastic) got slightly "shaved". You can also slightly de-burr the mag inside as well. Doing both has made my mags 100% reliable (I have yet to shoot my new 15s though).
|07-15-2020, 04:31 PM||#11|
Join Date: May 2020
Location: Tampa FL
Likes Received 75
Sorry to hear you had Magazine issues, j_p.
As others have indicated, the 365/XL mags do seem to need a little exercise at first. For my first two I loaded/unloaded them a couple times first. When I got my next three from Osage, I took all of them apart, lightly went over each follower with light sand paper looking for burrs, then cleaned the bodies out with a very light coat (mostly rubbed off) of Slip 2000 EWL, then reassembled. Iím only at 240 rounds but no issues loading / shooting (I use a Maglula also). Good luck, and I sincerely hope your problems are now behind you.