The flying ashtray was actually the 230 grain jacketed hollow cavity from CCI. Might not even be available anymore. I carried a 45 at work 20 years or so ago, and that was the issue load. I think it was a "Lawman" brand by CCI. We used the cheap Blazer version for practice, the agency didn't reload, and didn't allow you to collect the brass either. The Blazer version had a non reloadable aluminum case.
It is correct that the 230 required fitting and pistol smithing in MOST guns. The armorer at the agency profiled and polished the feed ramp, and adjusted the magazine guides at the top. It was a requirement that the guns run 500 rounds without a failure to feed, fire, or eject before they were issued. The "chief" was a good guy, and looked after the guys on the street, so our weapons were first rate, and well maintained. I left shortly after he was dismissed for backing a fellow officer in an unpopular (with certain elements of the public) non fatal shooting. Shortly after the "chief" was dismissed, I was tagged for excessive force, the new guy refused to back me, so after I won the civil suit, I told them to shove the badge.
Kimber is nice.
Sig P220 is as well.
Dan Wesson Patriot or Pointman also shoot very well, at least the ones I've shot.
Be aware that 1911 pattern guns must be cocked before they can be fired, and as such are actually single action first shot. Very short, and very light trigger pull. It leaves you confronting an opponent with your finger on the trigger of a cocked firearm with a short 3-5 pound trigger. It requires extra training and focus to avoid a stress induced AD. So long as you are trained, focused, and comfortable with that, then you cannot do much better than a 1911 pattern 45 like the Kimber or the Dan Wesson.