Why did you only fire one shot at each target
He shot it that way because the rules say you shoot it that way.
It is a LOT harder than shooting groups because you have to move the rifle between shots. It is a much better test of the skill of the shooter. It is also easier to score and to see who has the better target. If cz452shooter was to shoot 5 at each it would just be one hole and there would be no way to tell if some shots were in the center of the hole or nearer the edges.
245-5x is an exceptional score for that rifle, I know, I used to own it.
That score is better than I ever shot on the same targets.
Lots of folks that like to brag about their groups try the USBR target and the bragging stops.
Scoring an 8 is harder than hitting a deerfly
Scoring a 9 is like hitting a small housefly or empty .22brass head on
Scoring a 10 is like hitting the white tip of a wooden match or hitting the matchstick head on.
Scoring an x is like shooting through a quarter inch washer without touching it
That score is like hitting 23 of 25 match heads
24 of 25 empty .22 brass head on
or hitting 25 deerflies in a row
at 50 yards.