What is the best way to carry a revolver in a purse?

I wouldn't worry about it unless you the hammer back and stick in your purse. It takes a few pounds of pressure to pull the hammer back to fire it and it is a revolver so it should be relatively safe in your purse. Like the last person to answer though you might want to consider a purse friendly holster just to keep it clear of any other items in your purse and for faster retrieval if needed.