Took my chronograph to the range today. 8.8 grains of VihtaVuori N340, 155 grain Speer Gold Dot bullet in Starline 400 CorBon brass, averages 1310 fps. This is a nice load in a 1911 and all you have to buy is a barrel, a little stronger recoil spring and a barrel bushing. Who needs a .357 Magnum?

Went back to the range to try another powder with the 155 grain Gold Dot bullet in the 400 CorBon. This time I tried the French Vectan powder SP2. Using 13 grains of SP2 gives me 1400 - 1450 fps. Probably a max load but no signs of overpressure, but dang that's a handful in a 1911. Stick that in your computer and figure out the Power Factor or any other stopping power formula you want. You'll have a hard time beating it.