I use 165-gr Speer GDHP in my Ruger KP-91 and 180-gr Speer GDHP Short Barrel in my SIG P239, for home protection.
This might seem to be a split decision on my part, but it really isnít. Iíve had my Ruger KP-91 for a considerable time and it has shown a slight preference for 165-gr loadings, be they factory loads or my own reloads.
My SIG P239 is a recent purchase, and I need more range time with it, before I make a final determination as to what bullet weight it prefers. Additionally, I have been distracted from this goal by my purchase of a spare barrel chambered for the .357SIG cartridge. I may decide to use it as a .357SIG rather than as a .40 S&W.