Just about bet there will be folks swear their gun NEVER leaks, but it's common. Some may have better plunger seal than others, if you absolutely cannot stand it try ther brands of guns. To live with it keep it inside an appropriately sized plastic bag. Trash, grocery,etc. When bag gets too messy simply throw bag away. Wear gloves or wipe down with brake cleaner soaked rag when using. Needless to say store in coolest location possible, OUT OF SUN.
Bob