The KTS targets at CMP use the SR, SR3, and MR targets. The bullseyes of these are 13 inches, 18 inches and 40 inches. These are shot at 200, 300, and 600 yards. The targets themselves range from 4ft by 4 ft, to 6 ft by 6 ft. You can find the exact dimensions and ring sizes for the entire target in the NRA highpower Rulebook. The scoring model of the system is detailed on the Talledega website and in the CMP forums.
Traditionally a KD aqt is 40 rounds fired at 100 for standing, 200 for sitting, 300 for rapid prone and 400 for slow prone. If you are in NC, you could attend the CMP Creedmoor Games including the Safs class and match on April 29th where you would shoot a 48 round course if fire on the SR target at 200 yards at Camp Butner.