Just wondering if any of you have a handgun that just won’t eat a certain load. What gun and ammo combo is just not reliable for you?

I have not had any issues, but that steel cased Mag Tech range grade ammo does not like my buddy’s P365XL. Its not the gun. Everything else shoots great in it.

My DE .357 is picky about food.
I, unlike many DE Owners, shoot the hell out of mine and even carry it in certain circumstances!
8 years and more than likely 1K rounds, keep her clean and watch heads turn at the range/pistol comp shoots!

I quit buying Remington Golden Bullet or Thunderbolt (not sure which now) .22LR because I had some issues a few years ago in my 10/22 IIRC. I want to say it was extraction/FTF issues, but it’s been too many years now. I pretty much only use AutoMatch or CCI in all my .22’s. Oh, and Winchester subsonic.

I haven’t had any issues with any other calibers. Some brands/weights are more accurate then others for me of course, and I prefer certain weights over others, but everything feeds fine in my 9mm, .40, and .45 pistols.

The only ammo issue I’ve ever had is with older pistols not wanting to feed certain JHPs that they were never designed for in the first place anyway. What I have noticed though is that every 9mm pistol I have ever owned (mostly European) generally cycled more positively with 124gr than with 115gr.

The only ammo issues I've had were with 9mm 1911s.

I've owned a few, and they were all picky about ammo.
None of them would run remanufactured or cheap ammo of any kind.

My Sigs and Glocks run through anything I put in the mag..

All my .22 rifles hate Remington Thunderbolt. Lead gums up the barrels. My wife's P238 wouldn't shoot flat nosed bullets. Round nose work just fine, however.

If we're including rimfire my MKIV is a little picky. It's like Automatch the best, which works for me because I have a bunch and it's cheap. Our two MKIIs are not picky at all. Neither is my CMMG .22LR dedicated build.

I have a Jennings J22 that will launch the slide off if you shoot anything but CCI Stingers. That's the epitome of picky right there, but the gun is also an absolute POS.

As far as center-fire handguns go, if it's so marginal that it chokes on some type of SAAMI spec ammo, I don't want it and won't keep it around. The only exception to that is my P6 that wouldn't feed hollow-points with the factory barrel, but I corrected that by swapping in a newer one from a P225. Other than that I can't think of any center-fire handguns that I own that won't eat anything you feed it. My collection isn't terribly diverse, though, and it's all decent stuff...a bunch of P22X Sigs, some P320s, a pair of Berettas (92FS and 81), and a couple of Springfield 1911s.

My Ruger 22/45 was picky when I first got it, I ran a piece of 800 wet/dry thru the chamber on a dowel for a few seconds and it eats everything now.

Ruger LC9. Wouldn't run reliably with S&B 9mm ball back when they were still using the hard/thick (red) primer sealant. Light strikes galore. That Ruger also choked with any ammo using hard primers, like some 9mm NATO loads are known for (Winchester, Fiocchi, IMI, among others)

Of all guns to be ammo-sensitive, mine was a Springfield Armory Professional.

Granted, the pickiness was with one specific .45 ACP FMJ load from a lesser-known brand / manufacturer (I can’t even remember the name at the moment) who had stock on-hand when other sources were delayed during the earliest weeks of the pandemic.

That gun, normally rock-solid with anything else I fed it, would present failures to feed with that one brand / type of bullet. Other 1911s I owned at the time fed the stuff just fine. On the sort-of plus side, it did give me a chance to practice real-life stoppage-clearance drills at the range with the Pro haha.

Obviously, I gradually shot my way through that stash of ammo and didn’t buy more from that source.

My P320 X5 Legion will stovepipe about once a magazine with Blaser 115 grain Aluminum cased. It will feed, shoot and eject anything brass cased.

I recently purchased a couple of boxes of Aguila FMJ in .380 for range time with the Glock 42. Finally found something that it would not function with 100%. Stovepipe jams, failures to eject, rounds not being picked up from the magazine; and it got worse after a thorough cleaning and oiling after the first box. I'm staying away from it.

No problem for me, but the S&W Model 41 is a candidate. CCI standard velocity Is usually recommended.

There are especially 22 rimfire that can be picky - some won’t cycle lighter standard velocity ammo, others might do the same with hyper velocity.
In precision 22 target guns, there will be DRAMATIC differences in performance based on ammo. In almost every case European match ammo such as Eley RWS SK or Lapua will give best performance.

Judging a gun “ammo picky” when feeding absolute trash like bulk Remington or any Winchester ( the two worst quality 22 brands on the market by far, though federal is only marginally better) isn’t fair to the gun

Decades ago I went thru a number of 1911's that were picky, but they all worked well with military hardball. I currently have a Beretta 92 I run with a suppressor that prefers two brands of 147gr subsonic. I gave up on Remington ammo years ago, along with WWB. If a pistol will shoot any brand EXCEPT one, it's likely the ammo. And WWB is just too dirty these days.

My SIG P238 wouldn't feed Hornady Critical Defense, so I don't use it.

My P220 Legion 10mm wouldn't cycle the Underwood Xtreme Defender ammo with the unusual geometry bullets. I have a bit of the ammo, so I bought a Ruger GP100 in 10mm to be able to use it.

I get the impression that SIGs don't like anything with unusual geometry bullets, so I stick with Speer Gold Dot and Lawman, Federal HST and American Eagle, and Fiocchi Hyperperformance and Range Dynamics. Of course, that's just my experience.

My old single action CZ 75 did not like the Blazer aluminum ammo I was using when I bought it. When I sent it to Matt Mink work trigger work, he adjusted the gun to where it would eat steel/brass/aluminum no matter what.

Outside of 22LR firearms the only issue I've had is my USGI 1911's won't reliably eject alluminum cased ammo.

When I purchased my first Sig decades ago, a P229 in 9mm, it was extremely finicky with Blazer aluminum cases, several FTEs with each mag. But all other ammo was fine. Once I shot all of the Blazer, I never purchased it again, except for the Blazer Brass.