Prodod is a third party Day of Defeat: Source mod that builds on the foundation set down by DOD:S. Various key values from DOD:S have been changed to better suit the competitive community, as well as correct certain things in the game that Valve has consistently stated they will not ever address.
They did the test from 50 ft out. If they were any further the bullets would have not even hit the board.
well thats true
but 50 feet in the game is 25 feet in real life