eljay is correct, the stock spring is 16 lbs and it is not enough for +P ammo, it is barely enough for standard ammo. So if you are planning to use 200 gr +P ammo you should definately upgrade the spring to an 18.5 lb or possibly a 20 lb spring and use a shock buff. Since springs are inexpensive buy one of each from Wolf's Gunsrpings. Install the 20 lb spring and the replacement recoil spring. If your pistol functions properly with the +P ammo you are in good shape. If you have feeding, or ejection, problems install the 18.5 lb spring set.
I hope this helps.
The best handgun for self defense, is the one you have with you.
[This message has been edited by Str8_Shot (edited 11-19-2001).]