.40 is pretty snappy in a smaller pistol. With proper technique, the K9 is VERY easy to shoot fast and well. Just before I sold mine, I took a female friend shooting with it. She's maybe 5'3" and slim, with commensurately small hands. She shot it well and exhibited good recoil control - her pairs were quite fast. Unfortunately, I did not have my shot timer with me.
I had absolutely no problems controlling the K9. I shoot from Modern Isosceles and use The Grip.