1150 fps with a 180 gr bullet is firmly in 10mm territory. Buffalo Bore and Double Tap list their +P heavy loadings for .40 with the 180gr at 1100fps. I have been unable to find any credible loading data that comes close to that in .40. As you have a 10mm already, don't know why you'd want to load the .40 to those levels. Good luck, and load safely!
Savage