+p ammo is just ammo that is alittle "hotter" than the average round! its loaded at a higher pressure, hence the "+P". and to answer your question, yes! your XD can handle +p rds just as good as any other pistol! i also carry a xd9sc and carry it locked and loaded with speer gold dot 124 gr. +p rounds!

What perchjerk said. By definition, +p ammo means the pressures of the round exceed the recommended SAAMI ratings. The idea behind +p ammo is generally the desire to get a harder-hitting bullet than what can be found in conventional target or match loads. This of course results in a faster bullet at the cost of higher recoil and more wear and tear on the weapon. Typically +p ammo is used for personal defense, as these are not going to be used in a weapon regularly thus limiting the weapon's exposure to harsher abuse. More information can be found here:

http://en.wikipedia.org/wiki/Overpressure_ammunition
http://www.leverguns.com/articles/saami_pressures.htm

Check with your manufacturer's literature regarding your firearm and whether or not it has been engineered to handle +p ammo.

XDs LOVE +P ammo...fear not my brother...

HOWEVER NOT ALL HANDGUNS can handle it so check your specs

if you havent already, you sould check out xdtalk. great forum, lots of good people, and LOTS of info about XDs and firearms in general! u wont be disappointed!