Here's a chart that illustrates skywave bounce

    2 MHz 200-400 miles
    4 MHz 400-600 miles
    6 MHz 600-1,200 miles
    8 MHz 800-1,600 miles
    12 MHz 1,200-2,400 miles
    16 MHz 1,600-3,200 miles
    22 MHz 2,200-4,000 miles plus
    26 MHz unpredictable during our solar cycle minimum