4.4 gr of W231/HP38 sends plated 115's downrange at 1048 fps from a G19. Out of a 5" 1911 that same load exits at 1131 fps. It's an accurate load with any of several plated bullets I use. It doesn't have much recoil, yet it's enough to cycle everything. I've shot that load without incident through two P365's, a G43x, a G48, two 5" 1911's, a G19, a G23 with a 9mm barrel, and a Sig P229. Soon I'll be testing my new P365 XL with it.
When I started loading for the 9mm, I went searching for useful data and found this website:
http://www.natoreloading.com/hp38/ . I had some W231/HP38 on hand and decided to try it. I've never found a need to do anything different.
If it matters, I've also done some
testing with this load using small rifle primers and it works fine with them, so that's a plus.
