I went with the Clark conversion for my Colt 1911.
I hadn't shot my .45 much since I acquired my first Glock in 1999. I liked the idea of the 460 Rowland and decided to overhaul my 1911 at the same time.
My stock 1911.
I installed the Clark 460 Rowland conversion kit along with a flat mainspring housing, beavertail grip safety, Commander style hammer, lighter mainspring, and wrap-around Hogue grips.
Totally different gun. I love the way it feels and shoots.
I tried 185 grain JHP's and 200 grain SWC's this past weekend. Accuracy was excellent with both rounds. The 185's clocked 1510 fps. and the 200's went 1460 fps. I just cast a bunch of 230 grain SWC's and will be trying them as soon as weather permits. The 230's should achieve around 1340 fps. This will exceed the 1225 fps. I got with 230's in my 10mm by better than 100 fps. with a lot less recoil.