Are 307's better than 302's for google?

antic

Perch
I have a situation when I need to redirect Googlebot etc. to a different link to various files, but I want the search engine to retain the original link in its listings.

For example, the original link is /documents/docname.pdf but I want Googlebot to actually get the file from /googleversion.aspx?doc=docname.pdf. But I don't want Google to list that URL, I want it to keep the original as the "proper" URL.

If I use 302 (or perhaps 307 would be more appropriate) to continually direct Google to the new document locations, will Googlebot get annoyed? I don't want to annoy him. Will it affect listing of the documents or indeed the page itself that's linking to them?

Note this redirect will only be in place for files (PDF, DOC, GIF, JPG, etc) but not the page itself, which will behave normally when requested.

Any advice from SEO gurus much appreciated!
 
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