What's your favorite ammo for a sub compact 45acp ? In my Gov't size I've always used either the Ranger T 230 +P or Fed HST 230 +P . Not so sure I want to from a pocket rocket size .
Shooting close range (<15yds) for defense (at a man) I use the shirt button theory. (As explained/taught to me many years ago by a "real world" trainer.)
Picture a man faceing you with a button type shirt on. Most of these shirts have 4 or 5 buttons right down the "gig" line. Basically,sight in your defensive pistol for dead on R/L. Then change your bullet weight all you want. We tried (in 45ACP) 165's to 230's. Aiming at the second button down,any bullet used is a killing shot and pretty much a COM shot.
Practice to aim AT THE BUTTON. Try to hit the button. (Aim small . . . miss small) Actually draw buttons on your targets.
This helps greatly during the instinctive shooting learning phase.
Imagine that . . . and my middle name is not even "tactical". --- SAWMAN
Yes I too was taught " center mass " & it has worked with a variety of weapons at various range for many years . Sucessfully since I'm still here . I've chosen the Fed 230 HST Tactical non +P load for my Glock 30S .