so controlability of the load is very important. So is lightwt and compactness of the gun, so you'll HAVE it when you need it. That .44 aint with you much, and we all know that guys lie about carrying even a full size and wt 1911. About the most anyone ever carries, on a regular basis, is an alloy framed compact of some sort. Such guns have real control problems with heavy recoiling loads.
About all anyone can get decent repeat hit times with (ie, .20 second or faster) in a lw, compact pistol, is .45 ball. 230 grs at 800 fps from an Alloy Commander, for 184 recoil factor. Take the bullet wt in grains, multiply it times the velocity in fps, and toss out the irrelevant zeros. A 115 gr 9mm, at 1300 fps from a 4" barrel ( a pretty high-pressure load, actually) has a 150 recoil-factor.
A 60 gr bullet, at 2300 fps in a 4" 9x23 Winchester, has a recoil-factor of 138. So that is the way to go for maximum effect, with maximum control of the recoil. Such a load has 700 ft lbs of power, and it has the rifle-softpoint's abilty to tear up fragile chest organs with just its temporary cavity. If the bullet is a 3 segmented prefrag, like the QuikShok, that ability to damage organs with the temp cavity is enhanced. This is true because the multiple wound tracks weaken the organs, making them less able to withstand the tearing action of the temporary cavity. Swap out the mag and the barrel, and the 9x23 can fire 9x19 ammo for practice.
Such ammo and bullets also slice thru Kevlar armor like so much cheese. A nice side-benefit, but one which keeps any major manufacturer from offering such bullets-ammo. They are scared of offending the cops.