Hilton said the holster for the 9 mm pistol was found under the side of the bed on which Steenkamp slept - also implying it would have been impossible for Pistorius to get the gun without realizing that Steenkamp was not in the bed and could have been the person in the bathroom. Pistorius testified Tuesday that the bedroom was pitch dark.
Hilton said Steenkamp was shot in the head over her right ear and in her right elbow and hip, with both joints broken by the impacts.
Defense attorney Barry Roux asked Botha if Steenkamp's body showed "any pattern of defensive wounds," and the detective said it did not.
Botha said the shots were fired from 1.5 meters (five feet), and that police found three spent cartridges in the bathroom and one in the hallway connecting the bathroom to the bedroom.
Police also found two iPhones in the bathroom and two BlackBerrys in the bedroom, Hilton said, adding that none had been used to phone for help. Pistorius had said that he called the manager of his guarded and gated housing complex and a private paramedic service.
Roux said Pistorius did make calls, including to the guards of the housing estate. In one case, he said, a guard could hear Pistorius crying.
"Was it part of his premeditated plan, not to switch off the phone and cry?" Roux asked sarcastically.
Botha said Pistorius did not have a license for a .38-caliber weapon and consequently his possession of ammunition for such a weapon was illegal.
The detective said that all Pistorius would say after the shooting was "he thought it was a burglar."
In an additional revelation Wednesday, police said they found two boxes of testosterone and needles in the Pistorius' bedroom.
But Roux said the substance was an "herbal remedy," and not a steroid or a banned substance.
Police "take every piece of evidence and try to extract the most possibly negative connotation and present it to the court," defense lawyer Roux said.