What is the name of your state (only U.S. law)? West Virginia
What is the normal sentance, if any for brandishing?
The "normal sentence" will depend on the totality of facts, such as the context of the offense, if it was related to domestic violence or involve a family member, if it occured under the influence or in a place of sale of intoxicating spirts, the offenders plea, and the offenders prior record (if any).
So the bottom line is: there is no 'normal' or 'typical' sentence, particularly for a weapons crime.
Please flesh this out more along with the exact statue that was charged.