I haven't experienced it with 1000+ shot in mine.

 

I haven't experienced it yet, but I have noticed that the mags do begin to wobble pretty good when they are close to empty.

 

I had an idea on this thread. (Wow. last idea shutdown my township for a week)!.
Go to your neighborhood Harbor Freight and pick up one of their big packs of Oring boxes. Some of the thicker Orings would fill the space on the mag and grip bottom. Insert the magazine and then slip an oring from the bottom of the mag to the trouble spot. It may be all you need to shoot longer at the range and get your practice time in. Again, I haven't seen this on my gun but I don't doubt you feel it!
Good Luck!

 

OK, I registered for this forum really just to reply to this. I have the Hellcat and have noticed some wobble in my extended magazines as well. I can't say I've had the pinch too much but I have had it a few times. I found another page that suggested a site that sold a replacement bottom clip for the magazine.

Lakeline LLC

Engineering precision aftermarket parts to take the performance of your handguns to the next level. Orders ship same business day and come with the Lakeline Lifetime Guarantee.

lakelinellc.com

I figured it was worth a shot so got it. Totally fixed the wobble. I also figured out that you can just swap out the 11 rd mag bottom with this one to swap to 13, so get another. Worth it, if not a bit expensive. I like the Hellcat enough to spend it so worth considering.

 

This is the first I have heard of this. Sounds like a simple enough fix.

 

Yeah, definitely works well. Check it out. I will say, works on the 11rd, but I would need the metal clip at the bottom or the spring pokes out. Still would work to convert an 11rd but you'd need to metal clip for the bottom.

 

Buy some rubberized Talon grip grip tape and put it on the bottom of the mag. That's all Lakeline did

 

Try this on you're New Hell Cat the Hogue handall Beaver tail Grip Sleeve. Improved grip and feel