The 180 grain hollow point is the flying ashtray. Big fat hole in the middle. I have a couple boxes of the +p 180 grain ashtrays down stairs. More than 500 ft lbs, pretty accurate and I've never had a jam with the stuff. The only problem is the colt bites the web of my thumb with the +p stuff.
The original flying ashtray was the Speer Lawman 200 grain JHP. It was not loaded to +P pressure. I'm not sure Speer makes it anymore now that they have the excellent Gold Dot bullet.
I have a few left over from a box someone gave me about 15 years ago. I had several FTF while plinking with them so I carry either Winchester 185 grain Silvertips or Remington 185 grain JHP, both of which function 100% in my old Colt using Wilson magazines. The Silvertip was one of the first high performance .45acp rounds on the market. It's a little out of date now but it still feeds as reliably as any modern JHP, and it expands better at the lower velocity you get from short-barrelled guns than most of the modern gee-whiz JHPs.