I recently posted this at another forum but it fits here too:
I owned a Solo for over 3 years. I put over 2000 rounds thru it.
Yes, it did everything the OP said. I sent it back to Kimber who returned it and said it worked fine. It was the same as when I sent it in. They said it requires the premium ammo to function properly. I didn't accept that. Since I reload, I tried, probably, 20 different recipes to get it to function properly. I was frustrated. I got close to where it would only misfeed once or twice a mag (which was much better).
I then found a finger extension (which I like on all my subcompacts because I have XL hands) and picked one up. The instant I put the extension on my mag the issue went away. I got 100% in the mag with the extension and the usual 1 or 2 misfeeds with the rest of the mags in the same shooting session with the same ammo.
I further analyzed what was happening. I only got 2 fingers on the grip with no extension and 2.5 fingers with the extended mag. That 3rd finger allowed the gun to remain level during recoil and when I had no extension, the muzzle flipped up and some of the recoil was lost to the flip instead of cycling the slide. Yes, weak wristing or a form of it. With the extension, the gun recoiled into my palm and cycled the slide, no extension and the muzzle flipped up instead of back and it short cycled. I've been shooting pistols a long time and never thought I was limp-wristing anything.
So, knowing this I really concentrated on keeping my wrist locked while firing the Solo with no mag extension. I did get where I could run 2 or 3 mags before it misfed but that was the answer. I was able to run the cheapo 115gr ammo as well as everything in between when I used the finger extension. It was also close to 100% with no extension but close didn't cut it for me. Each extension was about $30 so it's not a cheap fix but it did fix the issue. No matter how strong you are or how manly you are, you can limp-wrist some sub-compact handguns.
If you don't find a cure then you cannot depend on it to perform 100% in a life-or-death situation. I was comfortable with it with the extension but never carried it because I was not 100% confident all the time knowing it was prone to failure if you didn't grip it 100% correctly.
I've read that many people have had no issues with the Solo at all. They probably got a gun that was tuned perfectly or just know how to hold the sub-compact models properly. I am envious of them because the Solo was and is a great gun. I've owned the LCP since the week they came out and have over 3000 rounds thru it without a single hiccup so not all small handguns run the same.
link for the extension:
http://www.ebay.com/itm/Kimber-Solo-...0AAOSw3xJVbyVi