IMO the worst thing about the 40 is it's kick that is generally packed into a 9mm size frame. Not all but many 40's are that way and when you have a kick harder than a 45 in a 9mm frame, recoil is going to affect your reacquisition time.
When people ask me I want a larger caliber than a 9mm in a compact and want suggestions I recommend the 45 even though I like the 40 a tad better.
For me it's all about recoil management and starting with a 40 in a standard frame is walking before you crawl.
That is just my opinion and I have known a few kids (now grown) who never crawled.
Frank pointed the way. You will find your groups getting tighter and your reacquisition pick up speed.
The hardest thing for me is these lighter frames. Not just the recoil management being easier for me but getting on target for the first shot.
It feels like nothing in my hands and almost begs me to not grip tight enough to keep the light thing from moving around when sighting the first shot because I know I need to grip tight enough to manage the extra felt recoil.
I added a Hogue grip and a couple more ounces to a little empty space on the back strap to make up for the light frame and it helped me tremendously.
