Thank you for your kind comments. It is always fun to shoot tight groups.
Behind each target during registered bench rest matches and during the Super Shoot, there is a wide piece of thin cardboard that moves back and forth behind the record target. When all the bullets go through one hole in the record target you will have 5 clear and seperate holes in the moving backer.
This cardboard serves as proof that all five bullets passed through the record target. Additionally, during large matches like the Super Shoot, after the bullet passes through the "moving backers" it passes through a third piece of cardboard which serve to prove that all 5 shots came from the same rifle. This is to prevent and resolve crossfire situations.
Even though these measures are in place so that a perfect bullet size hole can be proven to have been created with 5 shots, most of the time you don't need them.