The old 38 S&W load developed in the 1920's used a 195-200gr bullet at 625-650 fps. I've not sought to duplicate it in 38 Special, but I do load bullets 200 grains and up in 357 brass, with 235 grains being the heaviest I have used. The 200's do some impressive speeds using the Lil Gun out of a carbine or rifle. Using the 235 at just under 1100 out of a 357 revolver, I shot through a very large moose broadside.
I was looking to test them up to the old '38-44' power as well in 357 chambers. Great hunting story, how long did it take the moose to go down? What mold and hardness did you use?