How is it that Wormtail and others can use other's wands?

[hpfan_mom]

No: HPFGUIDX 147794

--- In HPforGrownups at yahoogroups.com, Bart Lidofsky <bartl at ...> wrote:
>
> fuzz876i wrote:
> > What I want to know is this:  how is it possible to use someone 
> > else's wand when that wand is supposed to be specific to the owner 
> > and backfire if someone else uses it?
> 
> Bart:
> I don't believe it says that anywhere in the canon. The only example 
I 
> saw was when Lockhart used Ron's BROKEN wand, which often backfired 
on Ron.
> 

hpfan_mom:

In fact, that wasn't even really Ron's wand - wasn't it originally 
Charlie's wand?