I would suppose the only immortality he would achieve from that would be the fragment in Harry and that might only live as long as Harry. Remember Harry had to 'die' for that soul fragment in Harry to be destroyed. With Harry alive, I doubt if there would be enough soul to be truly alive in a conscious way, but certainly not dead, either. (That almost reminds me of the explanation of the 'half-life' of anyone daring to try to keep themselves alive by drinking unicorn blood.)
I honestly don't really understand how those things worked. Voldemort tried time and time again to come back. I don't think he was utilizing any of the Horcruxes in SS/PS when he was lurking about in the Forbidden Forest drinking unicorn blood or camping-out on the back of Quirrell's head. He apparently was in book two with the diary Horcrux. And I don't think he used any Horcruxes when Peter resurrected him at the end of book four. So it seems a bit random as far as how the things were to be used.
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Date: 2013-03-23 07:36 am (UTC)I honestly don't really understand how those things worked. Voldemort tried time and time again to come back. I don't think he was utilizing any of the Horcruxes in SS/PS when he was lurking about in the Forbidden Forest drinking unicorn blood or camping-out on the back of Quirrell's head. He apparently was in book two with the diary Horcrux. And I don't think he used any Horcruxes when Peter resurrected him at the end of book four. So it seems a bit random as far as how the things were to be used.