That's a point of interest. It depends on your barrel twist rate. The .32 Long and .38 Special have a fairly slow 18 3/4" twist. It's really too slow for the long hollow base wadcutters. A few years back a fellow wrote a magazine article about .32 Long wadcutters and tried different barrel twists to see what happened to the groups? His sandbagged groups got tighter and tighter as he increased the twist until the groups minimized with a 12" twist. My dad's GSP has the standard 18 3/4" twist and it would keyhole those rounds when it was new, but seemed to get better with age. Still marginal, obviously.
Ignoring the 20" twist on the .44 Special, I figure with the .45's having 16" twists and able to be extremely accurate, and with the .32 Long WC's proven to do best with a 12" twist, that interpolates to the .357 groove pistol barrels being given a 13.3" twist. If I don't forget the .44 Special, but instead sub it for the .45, interpolation still suggests a 15" twist for the .357 groove bullet. It would be interesting to try one with a 13" or 14" or 15" twist to see if those hollow base wadcutters might not then remain stable all the way out to their drop to earth?