Took my Springfield Armory XD-Tactical 5.25" barrel pistol and my XDS 3.3" barrel pistol, both chambered in .45ACP, out to run some rounds through the chrono. Five (5) factory ammo flavors accompanied me - Winchester 185-gr STHP, Remington 230-gr GSHP, Remington 230-gr MC, Speer 230-gr GDHP and Buffalo Bore 230-gr +P JHP.
Meteorological data was 33 degrees Fahrenheit, 65% relative humidity and 30.69" Hg.
Velocity date in feet per second, mean average after discarding the highest and lowest data point for each string, as follows:
Barrel Length..................3.3"..................5.25"
WIN185STHP...................823.3................927.2
REM230GSHP...................776.4...............865.0
REM230MC......................729.0...............817.4
SPEER230GDHP................738.4...............835.5
BUFFALO203+PJHP............864.5...............961.1
As you can see, there is a 90-100 fps debit to go from the 5.25" barrel of the Tactical model to the 3.3" barrel of the XDS. I find it interesting that the 230-gr Buffalo Bore +P ammo is faster than the Winchester 185-gr ammo.
Only malfunction was operator induced. While shooting the Buffalo Bore out of the XDS I tried to rip the 5-round magazine out of the magwell with my pinky finger. Fortunately I noticed this when it happened. I daresay the awesome blast and recoil of the BB ammo contributed to my attempting to strangle the XDS, and thus putting my thumb too close to the mag release button, for when the second round of it went off. Certainly my fault, but it also reinforces my general disdain for semi-autos. I've never had a revolver cylinder come open during a string of fire and I have shot some hot-tamales out of some very lightweight wheelies.
