Dual-core wands? (was Elder Wand ownership (was Dual-core wands?))

[pippin_999]

No: HPFGUIDX 181552

CJ:
> Me <pouting impatiently>:
> But *I* want to talk about *my* point, which is that wand strength seems 
> to be cumulative: the triple spell that hit Greyback appears to have 
> been more powerful than Harry could have mustered with his own wand. If 
> three of any old wand is more powerful than a wizard's own wand, then 
> who cares if the wand chooses the wizard? Just grab any three wands and go.
>

Pippin:
Remember Harry's first visit to Ollivander's?
People have to be measured carefully for their wands and  previously
unowned wands may not readily respond to a prospective owner. A wand
taken in combat may be much more willing to adapt itself, either to working
in tandem with other wands or to a new owner, than wands generally. Though
there's no canon for it, I can see wands being competitive with each other and
not wanting to work together, like the sentient chessmen.

Wormtail used the wand he stole from the transformed Lupin but did not
try to keep it. Perhaps he feared he did not truly have its loyalty, since its
owner lost the wand to the werewolf transformation and not to Pettigrew
himself. I had  thought that Peter had intentionally spared Ron and 
Crookshanks but now I think it more likely the stolen wand simply didn't
do as much damage as Peter intended. That would explain why he dropped it. 

Pippin