Trying not to start a war here, however I am wondering. I have noticed at the range,the guys that shoot autos seem to always have some kind of problem. Is this a caricatoristic of them? I have seem all types. Do not get upset, just wondering.
It is likely that their weapons showed a lack of development time and were rushed to market. Reliable feed and extraction are not an accident of nature. It has to be engineered into the weapon, and not all cartridge and weapon configurations are going to be reliable in this aspect. I am not a fan of straight walled cartridges because if tolerances are a little off, and they are not precisely aligned with the chamber, jams result. Take a look at double stack pistol magazines, that top round has to be precisely located in line with the chamber, timing and release of the round has to be precise, if not, failures to feed occur.
I have seen a surprising number of jams with the short barreled M1911's. I don't know what is going on, but shortening the slide sure did something wrong with the timing and the things were jam a matics.
In print gunwriters do not shoot enough rounds down range to determine function reliability. I remember when the Bren Ten came out, the writer only had 200 rounds, the glowing text of his article had to have been thousands of words. After the Bren Ten collapsed it was revealed the things were jam a matics. If you notice, the current trend for inprint gunwriters is to shoot maybe four, three round groups. The guy fires 12 shots total and recommends you buy a $1000 weapon on the basis of 12 rounds? You are most certainly not reading a real test report, where not only the inherent accuracy of the firearm is determined, but also, the function reliablity. And I don't think that is an accident either.
I have been shooting Bullseye pistol and because I want the lightest recoiling round, sometimes I have failures to eject or failures to feed. It is all because of powder lot changes and temperature changes. When you are operating a pistol at a minimum energy input, it does not take much energy loss to create a malfunction. The last match I fired, one good shooter was testing out a 22 LR conversion on top of a M1911 frame. And the pistol was having failures to eject. The night before, both the pistol and ammunition had been left out in 40 ish weather, and I suggested low temperatures as a cause. Because I have seen it and experienced malfunctions with cold ammunition. Also, I suggested that the firing mechanism was not delivering sufficient energy on the rims to properly ignite the primer compound. Cold weather is actually a more severe environment on equipment than hot weather. As proof, just try to crank your car, with a seven year old, recently deceased battery, on a cold day. Everything worked just fine in 70 degree weather, but the first night everything gets into the 40's, that car ain't starting, is it?