I have three Kimber 1911s in .45 ACP.
I’ve owned my Gold Match 2 for nearly 20 years and it outshoots the Gold Cup I used to own. It’s been extremely reliable in both Bullseye and tactical shooting.
I carried this Kimber Ultra Carry II for almost a decade and once broken in it was relentlessly reliable and very accurate for a 3” 1911 (and far more accurate than the average 5” 1911).
I currently carry this CDP II and it was extremely reliable right out of the box and is again quite accurate.
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Kimber 1911s unfortunately have an undeserved reputation for unreliability and parts breakage. That stems from a number of factors related to the user:
1) Kimber 1911s do have tight frame to slide fits and do require a break in period of 200 to 500 rounds in most cases to reach full reliability. Unfortunately many shooters don’t understand this and/or won’t break the, in before passing judgement or trying to “upgrade” them.
2) Way too often shooters want to “upgrade” their new Kimber 1911 and do so before breaking it in and before understanding 191s or what they are doing to it in engineering terms. This has led to a particularly bad reputation for the short barrel models, particularly the Ultra Carry. The reason for that is pretty simple. The shorter barrel pistols have less slide over run and in fact there is almost none in the Ultra Carry compared to a 5” 1911.
So when the owner sets out to “upgrade” one, they do things like changing the recoil spring to a heavier one (thinking this will work better, reduce felt recoil, or produce more reliability with heavy loads) or installing a shock buffer. A heavier recoil spring and/or a shock buffer will reduce the slide over run in these shorter barrel models and reduce reliability.
A heavier recoil spring should only be used if the loads are indeed well over factory spec and are in fact battering the frame. I don’t use one even with +P loads as it adjust isn’t needed. There is also no free lunch. The idea people had in installing a heavier recoil spring is that it will reduce battering of the frame. That’s true in one direction, but when the slide comes forward again that extra energy from the spring, compressed over a shorter distance, is released over a shorter distance on the way forward and results in greater slide velocity that batters the barrel and frame when the slide goes back into battery.
Conversely a lighter recoil spring should only be used with light loads and bullets lighter than the normal 185 grain low end of the factory .45 ACP amp range. For example if you already shooting 155 gr SWC plate loads, you might want a lighter spring.
In short, unless there is a really good reason and the stock spring doesn’t work - after you have broken the pistol in with at least 500 rounds - leave the recoil spring alone and don’t start playing engineer thinking you are going to “upgrade” the pistol.
The same also applies to the extractor and the magazine. I’ve commented at length in prior posts about 1911 magazine feed lip design and the different point shapes the tapered lip/GI magazines, semi tapered Hybrid/Commerical op magazines, and the parallel/wadcutter lip magazines are designed for and how the feed lips and bullet shape and length interact with the feed ramp to produce reliable feeding, or not when you mis match them. I’d also commented on extractor issues that result when you mis match them. Do a search and you can probably find one o fit hose posts. But again, unless you have a really sound reason, stick with the stock Kimber magazines.
3) In addition, way too many shooters don’t understand that recoil springs wear out and that they wear out faster on the shorter Kimber 1911s. The spring like for an Ultra Carry is 800 rounds and it’s 1200 rounds for the 4” pro series pistols. If you are not replacing the recoil spring on schedule, you’ll have issues with the slide rebounding off the frame with insufficient slide over run time and unreliable feeding.
4) The Schwartz firing pin system has a number of detractors. They seldom realize that Schwartz worked for Colt and developed this system just before WWII and that Colt intended to make it standard on the 1911. Given the imminent entry into WWII the government asked them not to introduce a new type into service with different parts that were not compatible with existing 1911s. After WWII, with the world awash in surplus 1911s the low sales of post war 1911s didn’t make the change economically worthwhile. That’s too bad as tying the firing pin safety to the grip safety meant adding a firing pin safety had no effect on the trigger.
Fast forward about 40 years, number of 1911s out there and the number of shooters trained to field strip a 1911 created problems however when Kimber adopted the Schwartz system. Most shooters of the period when re-assembling a 1911 after field stripping it would hold the grip frame in their hand with the .grip safety fully depressed and put the slide backs on the frame. That works wing on the early commercial , GI, and Series 70 commercial 1911s, but it doesn’t work so well with the series pII Kimbers with the Schwartz system.
When you depress the grip safety, the stud in the frame is pressed up where it then engages and presses up on the pin in the slide that blocks the firing pin. It’s a very simple and straight forward system compared to the Series 80’s trigger activated system. However it means when you re-assemble the pistol you cannot just grip the grip frame in your manly hand and slam the slide back on the frame. It that’s what happens with shooters who don’t read the manual and don’t understand the system. They try to put the slide back on the frame and come up short when the slide contacts the raised stud. Not knowing what’s going on they back up and ram the slide on harder. If you ram it back hard enough you can get the slide to over come the leverage of the grip safety and get the slide back on.
However, it beats the bejeezus out of of the stud. Eventually it breaks and the pistol won’t fire. The pistol gets blamed even though it is 100% operator induced. Properly re-assembled, without the grip safety not depressed, the slide goes on smoothly and the Schwartz system is both reliable and durable.
5) Finally, a large percentage of the Kimber hate comes from people who did one or more of the above, and then posted on the internet. The result is a lot of the hate for Kimber 1911s is expressed by people who have never owned one, but instead know a guy who heard from a guy that said <insert your favorite Kimber beef here>.
Unless you are hearing from someone who actually owned one, broke it in, read the manual and knows how to assemble it, and didn’t mess with it and try to “upgrade” it, you need to take their comments with a large grain of salt or just ignore them altogether.
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The failure to comply with the break in period, user/ignorance induced issues related to the Schwartz system and users trying to upgrade the pistol (often before they’ve even shot it) account for pretty much all the failures with and complaints about the Kimber 1911s.
As stated above, I own three of them in 3”, 4” and 5” sizes and all of mine have been extremely reliable and have held up well over over a decade and well over 40,000 rounds between the three of them.