I've used it in both the 9mm and .45 ACP. My best load with it in the .45 ACP used a Lyman #452460 200 grn LSWC. It was Okay for the most part but a bit finicky. I switched over to Alliant (then Hercules) Red Dot, which I prefer.
The main attraction 700x had was that I could use it in both my 12 guage Trap loads and my Pistol Loads. These days I use Red Dot, Green Dot, and WST, for 12 guage, 9mm, .38 Special, and .45 ACP.