I really wasn't comparing the 40 S&W with the higher pressure 44 spl loads... why ?
If you are useing the higher pressure custom type 44 spl ammo .. you are fireing out of a 44 mag revolver or a Large frame 44spl revolver ....
Myself the 44spl shines at the attended lower pressure.. and useing it in a small or medium frame revolver ...
If I use higher pressure 44 spl ammo .. I will have a 44mag revolver .. and then I will just save myself money and fire 44 mag ammo ... Instead of custom high pressure 44 spl ammo ...
Myself , if Im going heeled .. I may carry my 27 over my 44spl ..They're absolutely no real world self defense advantage .. In carrying a 5 shot 44Spl revolver over a 27 9+1 loaded with the plentiful and abundant selection of SD 40 S&W ammo..
If I had a large frame revolver in 44 spl or 44 magnum ..
I would still carry a 27,30S or even a Glock 41 over a 44 oz 5 or 6 shooter ..
My Charter 44spl 2.5 inch barrel 21oz
Hornady XTP 180gr 44spl out of a 2.5 inch barrel 775 fps
Federal Hydra-Shok 165gr 924 fps out of a 27
i choose these examples , becuase they represent easily found , effective SD ammo .
I picked lighter 40 S&W bullet to where bullets would have similar sectional density..