official ratio.
At 2000 mm gwanyeok at 145 meter ratio
Targer size Range
2000 mm qwanyeok is at 145 meter
1200 mm at 87 meter
1000 mm at 72 meter
900 mm at 65 meter
600 mm at 43 meter
500 mm at 36 meter
400 mm at 29 meter
300 mm at 21 meter
200 mm at 15 meter
100 mm at 7 meter