Hi Twang
First of all wellcome
Sorry for not being very responsive to your inquires, I havent even broken in mine. But, i can suggest you to look for a thread by Gato. He making his P99 undergo a torture test. I think he hasnt changed anything to it, not even cleaned it. hehe, not that i dont want you to clean your gun
http://www.gothammarketing.com/bb....1;t=859
From what i have read here and in other forums and online articles, i understand that the FMJ ammo you using is fine for that purpose, specially the lighter one of 165 grains. As for cleaning, I heard of people using that special purpose gun scrub even for the receiver. I only use rem oil, but mine only suffers from excesive dust in my town. I never quite shoot it. I read here too that seldom, some users have to change some springs on their P99s. It depends much on year of manufacture. P99s marked AB, i think, are some of the best manufactured.
This thread might interest you as well
http://www.gothammarketing.com/bb....;t=1516
Please also visit the P99 FAQ,
http://www.praxagora.com/lunde/WaltherP99FAQ/
a must for us P99ers. It is a site made by Mr Lenaburg and Lunde.
You will get better help from other users, I just wanted to give some basic pointers while the other guys show up. Congratulations on you P99
saludos
Hector