Buffalo Bore uses Montana Gold bullets which are not known for expanding well. I carry the .357 Mag Buffalo Bore 180 grain hardcast loads when I am camping or hiking, but I wouldn't use their hollow points.
Underwood Ammo loads their stuff super hot and they use Gold Dots. I know their .357 Mag 158 grain bullets did not live up to their advertised velocity and Underwood is aware of this and fixing the problem, but one guy said he chronographed the 125 grain bullets at 1545 fps out of a 4" barrel. I've also seen videos of their other calibers reaching or exceeding their advertised velocities.