Good info, TY. I'd heard reports of some mag bulge when overloading. It's still early for mine but I'm good at 20 which is still twice what most of my other rimfires pack. But I might grab a 25 rounder if they ever come around.

 

Here’s my idea.
Just load 20 and avoid damaging the magazine.

 

Well that’s a good idea. In theory. But in reality, it can’t always work that way. When loading mags, I don’t always count how many I put, I just load it till it hits the stop. You know, how normal magazines usually work. These mags have no stop so it’s easy to load 21-23 without putting any extra effort. Then after that happens a few times, they bulge and then start jamming.

 

When I load my 10/22 mags I can count them on my fingers.
Loading P322 mags requires me to take off my shoes…

 

I have the Sig P322, and I'm very aware of the mag/loading issues people have talked about. I'm glad I have not had any negative experience with it I use the mag loading assist tool, that came with my pistol. It works good, and as long as all the rounds are tilted slightly nose up, I have no stove pipes, or FTF, FTE. I never use WW 22lr, I've seen people have issues with that ammo. I only use 22lr federal 'auto match', CCI mini mag's and Norma TAC 22. Everything at least 1100fps. I've heard that TAC 22 may chrono less than that. I really don't know, they work for me.

I have NOT messed with any of the mechanics of the mags themselves. I just make sure they're clean and use very little dry silicone internally. They work fine for me. I'll be buying at least 4 more mags after the 1st of the yr. The P322 came with 2 20 round mags. When I load them, I always leave a couple of rounds out (I don't cram the mags). Just MHO

 

Do you fill the crankcase of your car/truck until oil runs out the fill after an oil & filter change? 😁. Just having fun. 👍

 

People have talked about this on Sig Talk.
I would say if you used a heat gun on plastic mag body and then again loaded more rounds than the mags are stated to accept. I'd buy some new mags and only load 20 rounds or less in the mags. If you want it to be a reliable pistol you should probably follow manufacturers directions.

Kinda like if you are a reloader. If you fill a case with powder and the seat the bullet. Probably not going to end well.

Do you fill the crankcase of your car/truck until oil runs out the fill after an oil & filter change?

Back in highschool had a friend not so mechanical inclined do his first oil change on his new used car. Was proud to tell everyone the story of how he did it. Then mentioned he was surprised at how much oil it took to fill it up. He put enough oil to see oil at the fill cap. So he got some help on draining it to proper level.

 

Double stack magazines seem to have a lot of problems. You can download them but a simple plan is to load the magazine and then slam it into your palm which will help seat all the bullets the same way. Just a tap works. Give it a try.

 

I slap the back (where the rims are) against my palm to seat them while loading.

 

It seems you’ve identified a problem and are aware of a simple solution, but refuse to implement it.
Glad we could help…

 

Help? How? I’m the one posting what the problem is and the solution. Your solution is to count the bullets. Mine is an actual fix. Your solution, isn’t actually a solution. It’s a suggestion. What about the people that already bulged the magazine? How’s your “solution” going to fix that? It won’t. But what I illustrated here will. That, or buy new magazines. You could hear the mag up and squeeze it back narrower, but that didn’t work as well for me. Your “solution” is also insinuating (at least I’m taking it that way) that I’m some kind of idiot. I’m trying help people, not insult them. Thanks for your “help”.

 

When I tested my mags they bulge after 18 rounds are loaded. There is resistance when you remove the assist.
I just load 15 and haven't had any problems since.

 

I have the same issues with mine as well. I have to load it very carefully

 

just purchased a sig p322 to get a little more trigger time at the range. Haven't shot it yet but still wondering about which ammo to use. Mostly I use CCI in all my other .22s along with the federal auto-match--which some say is not good for the p322s.
What works best for all f you?

 

My p322 loves AutoMatch

 

While I've read multiple complaints about Automatch, mine runs it fine.
FWIW before I did the shim trick I did have a much higher rate of fail to fires with Fed. Automatch vs CCI mini mags.

 

my question might be WHY does everyone think they are so smart as to overdesign/overmodify something that works just fine as designed ? everybody has to bash and denegrate a perfectly good firearm [mine works just fine] and its often based on trying to do something that it was not designed to do , ----but hey , take your file out or dremil and carve away - just dont blame the mfgr when it underperforms , its not their fault , its yours

 

My question is, do you think all manufacturers make no mistakes? Like everything they make is flawless, they never have recalls and nothing can be improved upon. Yes, I bet you do.

Sarcasm out the way.

my question might be WHY does everyone think they are so smart as to overdesign/overmodify something that works just fine as designed ? Because when every other round does not GET PUSHED UP BY THE MAGAZINE..and it jams.... I'd say it needs to be corrected. If it doesn't work, it doesn't work. I bought one the first week they were released. Maybe they fixed the issue once you got yours. I'm not the only one with this issue and i'm not loading the mags "incorrectly".

Ever owned a 10/22? If so, you probably know its flaws and its fixes. Its been in production for decades and ruger still has not fixed all of the flaws. Some people even have to send their rifle back. What about the lcp2? Same thing. They sell a spring kit that greatly improves function and reliability over the factory. Your sarcastic question should have been answered before you even wrote it.

 

I picked one of these up on Saturday. I only had time to put 50 rounds though it and it fed fine, but didn't like the Aguila standard velocity ammo I was feeding it. I had several failures to fire that looked like light strikes, which I think are a result of the cartridge not fully seating in the chamber. If I recall correctly, there have been some complaints about the amount of lube on the Aguila ammo keeping the cartridge from seating completely.

I'll try it with some of the other ammo I have (CCI SV, Federal Automatch, cheap bulk Remington HV) and see if I get better results.

I was impressed with the accuracy when it did go bang and was surprised at how good a trigger it has, as my only other striker fired handgun is a Kahr P40. My first impression is very positive.

 

The .22 rimfire was never intended to work out of a staggered, double column magazine. The fact that SIG, Taurus and Kel-Tec can get them to work at all is a remarkable feat in itself. There's a reason why most .22s only use 10-round magazines... beyond that capacity you start to get stacking issues and normally need a curved magazine. My P322 has been running great, and yes I could stuff an additional round or two in the mags if I was careless, but I simply sort out 20 rounds of Auto Match at a time and then carefully load each mag one round at a time. You have to keep follower tension on the rounds as you load them... if you simply pull the follower down and dump the rounds in they'll start stacking wrong (see the left pic) and you'll get malfunctions for sure. Just always make sure they're all lined up in the same orientation (right pic) and you'll be fine.

 

Reminds me of the S&W 15-22 magazine. Those had "problems" out the gate because people pulled the followers down and dumped in rounds, causing the rims to hang-up. They need to be loaded staggered like the picture with the green check box, with the rims alternating back and fourth.

 

I had problems with my P322 mags in that sometimes the slide was not picking up a round to chamber it. I watched Phil Strader‘s video on the Sig site about how to correctly load the mags, followed that procedure, and the problem went away.

 

Makes little sense that you would have to agonize over how exactly you stack your ammunition in a magazine to make your firearm feed properly. You should always follow common sense when loading...but anyone with moderate experience around firearms can tell that the Sig P322 mags were poorly designed and should have been fabricated out of metal. The sidewalls of the magazines are not stiff enough to keep the rounds properly placed in the flimsy magazines. I appreciate what DSK says and there is no doubt that he knows his stuff about properly loading a magazine but I have never (until I purchased a P322) had to pay the particular attention that it takes to make these magazines operate properly. Even more concerning is that once you painstakingly load these magazines, based on how poorly made they are, it takes little movement to turn the magazine on the right into the magazine on the left.

 

A steel magazine would be amazing. I find if I download mine a few rounds it mitigates the feeding issues.

Also, some of the feeding issues could be a mismatch between recoil spring strength and ammo type. I found standard velocity ammo runs better with the factory supplied recoil spring and High Velocity ammo runs better with the HV recoil spring.

 

I had issues but now I only use 40gr CCI mini mags and not a single issue.

 

that and loading the mags properly , its all it takes to have a great experience at the range or in the field

 

I agree with some of the posts here (not all). I've owned a Sig P322 for just over a yr, and my experience is in some ways similar. Does every brand of 22lr function correctly, every time? NO, every firearm made will function better/best with one brand of ammo over another. It's always been that way, especially with semi auto guns. In my P322, I use Fed auto match (bulk 325 rnd), CCI mini mags and Norma Tac 22 with virtually NO issues. Do I follow the Sig recommendation's for mag loading? Of course, I do. Same way that I 'pay attention' when loading 10-22 mags, or 'Any' other mags.

As far as mags being made of materials that are 'Non-Metal', the same holds true for AR mags! Some are/function great, some, not so good. That's the nature of the beast, we shooting enthusiast, just deal with. Like was said above, nothing in life is perfect, our firearms and how we face/correct issues is one of the reasons why we have these forums (basically support groups).