Happily, I've never wrestled one
But I did go through a training course for lawmen in the late '70s - early '80s regarding PCP use and law enforcement handling. The course (seminar) was presented by California Dept of Justice and had sub categories for medical people, social workers and flatfooti.
Jabotinsky mentioned "...those high on PCP are very unlikely to rob a store or even operate a weapon properly...they can be a danger to themselves mostly." That statement is correct as far it goes. Unfortunatly, one side effect of PCP use is extreme paranoia. So any attempt to talk to or assist the user - in any way - is typically interpreted as some form of attack.
No, PCP use does not make one death proof. However, it does completely block pain receptors. A heart shot will most likely kill the user - eventually. In the mean time, they do not have the ability to recognize they are mortally wounded and lie down peacefully and die. They continue with what they were doing until death overtakes them.
It does not give more strength, but since one does not feel pain, one can hit much harder with one's hands. Pain compliance does not exist, as nothing hurts. A massive beating and clubbing and broken bones and such will not deter the user. (When the drug wears off, the pain will be intense - provided they survive.)
That's the problem with dealing with PCP users. Extreme paranoia, limited thinking and judgement, and no pain sensors. For those thinking this is all government propaganda designed to keep the citizens from enjoying the many benefits of recreational drug use, a tinfoil hat will not provide suitable defense from a PCP freak either.