Odd MBX mag feeding issue

[JMPhotog]

I’m running new MBX mags on my CK Arms Thunder 40 Limited gun.  This is a brand new gun and brand new mags. They all seem to be running great, but I have one mag that seems to let the 4th or 5th “last” round in the mag do a nose dive straight into the feed ramp. A quick sling shot of the slide and it feeds it right in and I can finish the rest of the mag as normal. Happened a couple times during a match.  The Rest of the mags run fine and even that mag runs fine but occasionally that fifth round from the end causes an issue.

im running 180gr Berry’s target hollow point loaded to 1.180 at the suggestion of CK.  Not that it may be related to this issue, but I have Montana gold JHP’s on order And plan on running those moving forward. The Berry’s s were just a fill-in. I checked to make sure the follower isn’t getting hung up on anything, nothing that I could see. Any thoughts?

[scooterj]

With 4 rounds in my MBX mags, the follower is visible through the mag catch slot. Seems likely that the follower is getting caught on either the mag catch slot or the mag catch, itself. 

Remove spring and follower from mag and insert into gun with slide removed. The mag catch should not be protruding into the magazine. 

Edited August 15, 2018 by scooterj

[RangerTrace]

18 hours ago, JMPhotog said:

I’m running new MBX mags on my CK Arms Thunder 40 Limited gun.  This is a brand new gun and brand new mags. They all seem to be running great, but I have one mag that seems to let the 4th or 5th “last” round in the mag do a nose dive straight into the feed ramp. A quick sling shot of the slide and it feeds it right in and I can finish the rest of the mag as normal. Happened a couple times during a match.  The Rest of the mags run fine and even that mag runs fine but occasionally that fifth round from the end causes an issue.

im running 180gr Berry’s target hollow point loaded to 1.180 at the suggestion of CK.  Not that it may be related to this issue, but I have Montana gold JHP’s on order And plan on running those moving forward. The Berry’s s were just a fill-in. I checked to make sure the follower isn’t getting hung up on anything, nothing that I could see. Any thoughts?

Send that mag back to MBX.