I have several .38 Super handguns, 1SOW. I've got a 1911, a fullsize Witness, a compact Witness and a Witness Elite Match.
I don't push them real hard, since I was going for accuracy. Out of the fullsize Witness, loading with 9.4 grains of Accurate AA-7, they chronograph at an average of 1,084 fps. With that load, I can shoot one ragged hole at 15 yards, standing two handed hold, unsupported. The 18 shot group was just a little over 1", but it was slow fire.
Another load I use with that bullet is 9.7 grains of Blue Dot, for a velocity of 1,270 fps out of the same gun. It's nearly as accurate as the AA-7 load, but with a little more recoil, but not bad at all.
Hope this helps.
Fred