Does anyone have any data on this powder at all. I bought a can thinking i could fined some info on it

It's for big belt case's .
I was hoping to be able to use it in my 416 Rigby..

Anyone ?

Try this:

http://www.hodgdon.com/data/retumbo/index.php#top

Retumbo is ADI AR2225, repackaged by Hodgdon. Probably to slow for the Rigby.

web page

web page