Thank you for testing the Sig 365 ammo and getting the speed data out of a S2K.
If you have the capability to test another type of round also. It is called Cutting Edge bullets. They have blades that sheer off into a star shape cavity. Here are some more details.
Cutting Edge Bullets 9MM PHD (Personal Home Defense)
Here is a video: (Start at :45 into the video. The beginning is just braggart hunting footage.)
These are the ones that are $33 for a box of 20 count.