Now, truthfully.....
Using the original, roundnose bullet profile the gun was intended to run with in the first place is the most likely way to get the .45 ACP to run, assuming we're talking about a 1911, or many other .45 manufactured guns, for that matter.
Despite the claims of great reliability for nonstandard bullets with flat nose profiles, if I had to bet money on any given bullet profile cycling reliably, I wouldn't put much money on a lightweight bullet with a nonstandard nose flat and nonstandard overall length. Many of the bulets intended for the .45 Colt in cowboy action shooting are just that.
Function well in many gun/magazine combinations, sure. But feed better in more guns than the original ball profile?
Unlikely.
Jams can occur for many reasons, but I'm talking about the shape most likely to feed.