Have you seen a match bullet only go 6 inches or are you repeating something you read one time and believe it must happen every time?
The guy linked you a thread that shows how deep and far certain match bullets are believed to penetrate based on ballistic gel tests. All of them are more than 6 inches. There's also hundreds of pages of pictures showing that match bullets are penetrating further than 6" on every game animal in North America. To make this statement is either intentionally dense for the sake of arguing, or lazy because you refuse to read the information freely provided to anyone willing to read and learn.