SA law doesn't have a castle doctrine, nor does it have a stand your ground defense.
When discharging a firearm, SA law is very strict about when it's legal to do so.
OP's actions on the early morning of February 14, 2013 do not meet SA's legal requirement for self defense.
To get an idea of OP's sense of entitlement that he should be allowed to gun down & kill someone in his house, here are his own words from his bail hearing affidavit:
I fail to understand how I could be charged with murder, let alone premeditated murder, as I had no intention to kill my girlfriend, Reeva Steenkamp (“Reeva”
.
http://gretawire.foxnewsinsider.com/2013/02/19/copy-of-oscar-pistorius-affidavit-click-to-read/
Sean Rens' testimony has revealed that OP took, passed, and signed off on the firearms competency test. OP was aware that
the legal requirement to use lethal force in self defense requires that the assailant must be seen, must have access to him, must be armed with a deadly weapon, must express the intent to harm or kill him, and must approach him.
His actions DO NOT meet the legal requirements for self defense, according to SA law.
He discharged 4 rounds through a closed door. IMO, that alone shows that he was hell-bent on killing whomever was behind that door, whether he knew it was Reeva behind the door or not.
Oh - but he fails to understand how he could be charged with murder, let alone premeditated murder??? GMAB
As far as I'm concerned, Oscar Pistorius is one scary individual. I hope he gets locked up for a very loooong time.