Originally Posted by LoboGunLeather

2400 is among the slower burning powders suitable for handgun use. I would expect 2400 to provide best performance in the longer barreled handguns, with the shorter barrels providing reduced performance due to longer ignition and burning times with more unburned powder blown out the muzzle.

Published data clearly indicates that the charges required with 2400 are significantly heavier than many other suitable powders, so clearly not as economical in regular use.

Not to say that 2400 can't be used in .38 Spl. snubbie loads, just suggesting that there may be more useful choices.