Better performance from the 940 is a fairly easy thing. Especially of you hand load.

Starting off with 9mm, I load tons of 158grain FMJ for my 9mms. However I load them at 1030 FPS for use in suppressed firearms. I bought 10,000 of these projectiles a few years back when they were being closed out by the distributor. I have a few thousand remaining. It is not necessary to re-barrel these firearms. They are very accurate with the 158 grain projectiles.


In truth, the 940 really shines when you re-chamber it. Some have been opened up to 38Super while others have been re-chambered to 9x23. Personally, I would not chamber an older J-frame 940 to 9x23 but a 940 built on the J-magnum frame is another issue.

With hand loading the 9x23 Winchester can push a 147 grain gold dot to roughly 1300 FPS. This is near 357Magnum performance with moon clip convenience.

The bonus is that these firearms can still chamber and shoot standard 9mm ammunition if you want.