Semisane

Sorry forgot about twist rates.... for both the Extreme's and Eltite's

52 cal - 1/26
50 cal - 1/28
45 cal - recent models - 1/30 (include late model Original DISC and all Extreme - Elite's)
45 cal - early models - 1/20 (Early Original DISC's only up to serial #2291 on Blued models and #5043 on Stainless)

The Elite you might be looking at, is 1/30 for a 45, so if you might shoot long bullets (lead free) like a Barnes or Lehigh - you might need to shoot a pretty significant load to stabilize the longer 40 cal bullets.

Also another fact Knight's are rated for 150 grains of T7, not that you or I might shoot that much but they can.