Gentlemen,

I tested some .45 ACP factory ammunition for velocity in an .45 Officer's ACP pistol.

Test results were astonishing:
Federal 230grs Hydra Shok had a velocity of 246 m/s (807 fps) and an energy of 460 Joules.
And that from a 3.5" barrel!

Precision was good and no malfunctions,stoppages etc. occured.
(Chronograph was a BMC Mehl 18, approx. 4 meters in front of the muzzle)

That would be a good defensive ammunition even for short barrels, but it had quite an muzzle flash.

best regards
Rolf