Welcome to the forum and thanks for asking our advice.
It is highly unlikely the brass you have is suitable for your 8mm-06. Blank rounds are not intended for the pressures associated with bullet-firing ammunition.
All is not lost, though. The brass may have value as metal, and you can take them to a local recycling center and get cash for them. Look up "Metal Recycling" in your local phone book's yellow pages or do an internet search for local recyclers.
Then use the money to get a copy of "The ABC's of Reloading" and read it before doing anything else.