On June 28, 2002, approximately 1630 mountain daylight time, a Hunter Comp Air 6 homebuilt aircraft, N6008N, registered to the builder, and being flown by a private pilot, sustained substantial damage during a loss of control and subsequent nose over on landing at the McCall airport, McCall, Idaho. The pilot, who was the only occupant, sustained minor injuries. Visual meteorological conditions prevailed and no flight plan had been filed. The ferry flight was operated under 14 CFR 91 and had departed Tarkio, Montana, approximately 1500. The pilot reported that while landing on runway 16 at McCall he touched down on the runway pavement and then ground looped the aircraft. He reported the windsock as being extended more than 45 degrees (from the pole) and showing a 30-35 degree crosswind. An inspector assigned to the Federal Aviation Administration's Boise Flight Standards District Office witnessed the accident and reported that the aircraft touched down on the right wheel and bounced followed by the left wheel and tail wheel at which time it left the runway and nosed over. The inspector examined the aircraft's flight controls and brakes and found no evidence of any mechanical malfunction. The aviation surface observation taken at McCall at 1650 MDT reported winds of 190 degrees magnetic at 10 knots (30 degree right crosswind). The pilot had just purchased the aircraft and reported a total of about 3 hours time in the make/model.