I'll offer my 2 cents. I've owned one 223. A Ruger Mini-14 bought specifically for Rez use where the BG's had, literally, 30 and 50 cal machine guns and we had a 357 and an Ithaca 37 12 ga. Bought it pretty reasonable from a NYS DEC Fish Cop who went through guns like I go through paper towels. Great guy to know, especially if you had a little $$$$. Anyway, while it felt okay and was easy to carry, groups of 4-5" at 50 yards were not uncommon. At 100 8-10" groups were the norm. The muzzle was recrowned, a whole list of things checked, I never figured it out. Sometimes I'd get a 2.5-3" group at 50 yards if everything in the universe just happened to line up right. It had been glass bedded before I got it and they had obviously tired supporting the barrel and free floating it. It was just a lemon. Anyhoo, that was my sole 223 I ever owned. I regret selling it now simply because I could have asked a ridiculous price and gotten it today. I believe I traded it, partially, for my '03 Springfield. I would take another stab at the 223 if I could find the right rifle- but not an AR. I have tried and tried but they just don't appeal to me. Plus- who wants to chase brass? No, something like those little CZ's might do it, but that's about it.
I own 2 quasi 1911's- a Star PD, which is only mostly a 1911 from what I read, and a 1927 Argentinian 1911, which I understand was built under license from Colt with Colt input. Again, we're back to chasing brass, not my favorite hobby. The Star is a great carry gun, but I'm afraid to shoot it much lest I break it being one of those alloy framed "Carry often, shoot little" guns. The Argie is a project as the barrel was toast when I got it. Another long term repair job since I decided, probably mistakenly, to try to build a reliably accurate 1911 back around 2005, with 2005 tech and, at that time, components.
In truth, I'm a revolver/bolt/lever guy. I carried every day for 20 plus years and to honest, it's a royal pain in the keester. Doesn't matter what you do, it's one more thing weighing you down, in the way, right where you need to roll to under a vehicle and you spend every waking moment worrying about it somehow falling out and getting lost. Trying to figure the best trade offs for me brings me back to a rifle that's fairly accessible in various out buildings or a tiny snubbie 38 in a pocket. I can not imagine trying to live life as I do carrying a 1911 all the time.