I have carried a 1911 as work gun and have seen several people sht wiht the 4 ACP [and other calibers as well].

I do think that a good 45ACP HP is better than 230gr ball.
But there are no flies on Ball. I am wearing a 1911 in 45 ACP as I type this.

I now usually carry Remington 230gr Golden Saber HP. Two reasons, it has proven to be good stuff, and I was gifted a bunch of it. It is very accurate.

I have seen good results from, back in the day, such rounds as WW 185 Silvertip, RP 185gr HP and their 185+P HP, Speer 200gr HP, the flying ashtray bullet. Basically any 45 ACP bullet is pretty good.

Reliability is the most important thing, IMHO.

I always carry a couple of extra mags of RP 230 Golden Sabre, and several other extra mags of 230gr ball.

Over penetration is a concern only to someone that is a excellent shot.

Around 85% to 90% of the shots fired miss the suspect...
One theory is...
Why worry about the 10 to 15% that actually connect???

I do believe this;
For a trained person, with a 1911 in 45 ACP, that works, there is not a better General Purpose combat/self protection handgun, on the Planet.