I wondered exactly the same thing. I was told that there was proof that he only fired four shots that night, which is obviously not true. There is only evidence for four shots - what evidence would shots out a window leave? Did anyone search the garden?
I think it's perfectly plausible to wonder if these were the first bangs Stipp heard. An enraged OP could easily have been terrifying her by shooting out the window which would cause her screams to increase in intensity, as the witnesses said.
Stipp was adamant that both sets were gunshots and OP has been known to fire out of windows before. Makes sense to me.
But I was told the last set MUST have been cricket bat bangs because, er, OP said they were.
There's literally NO evidence that OP smashed down the door with the cricket bat...none. A few marks where the veneer has been gouged out does not indicate desperate door smashing - dents and cracks might, and where exactly are they on the door.
The door broke because the panels were prised out, that's why they are all in big, neat pieces. I don't doubt that OP used the cricket bat on the door - but smashed it in with whacks so loud they could be heard as far as the Stipp house? No way.
Personally, I think the following:
Big row that got bigger and bigger - neither had slept
Reeva locks OP out of the bedroom so he kicks the door and (maybe) shoots it
He gets in (finds another key) waving the gun
She runs to the bathroom, locks herself in the loo
"Get out of my house" flings jeans out of the window
Tells her to come out, smacks the door a few times with the bat to scare her - these are the relatively minor gauge marks
She still won't come out so he, standing by the open window, fires a couple of shots outside and tells her he'll shoot the lock off if she doesn't come out
She screams, screams, screams.....he shoots in the direction of the lock and kills her
Panics and calls Stander
Stander says, do nothing, call no one, I'm on my way
Security show up - panicked, horrified OP says "Everything is fine" as instructed by Stander
Unfortunately security and Stipp come to the house at the same time as Stander, so whatever the plan was couldn't now happen
ALL OP could say at this stage was "I thought she was an intruder" - what else was there?
By the way, I am not necessarily accusing Stander of dishonesty or conspiracy, I think OP could just have said, "I've killed Reeva" and he may not have been coherent enough for Stander to understand what had happened. This is why he needed to get to the house before he called anyone.
That's my theory....and I am well aware that it's pure supposition on my part