Bamber testified he was proficient with the murder weapon. However I don't believe he killed anyone prior to the massacre. As mentioned, the first shot was effective but not fatal. So what ?
So what?? He's just gone to enormous trouble to plan and stage a multiple murder, involving ferocious fighting and multiple gunshots, getting out of a building totally secured from the inside, phone calls, alleged phone calls, night bike rides etc etc, leading the police a merry dance...
And he cant even hit the target for an over sedated woman - who is arguably the most crucial of his victims in his plan?
Ok. You believe EP may have shot Sheila after she had been pronounced dead. That is fine.
That's not my theory - it's one of Mike Tesko's theories.