Wind is your biggest factor in PD shooting. I knew that going into it and still did ok with my .222 w/40g VLC at 3700fps for the 250-300 yard shots, then I broke out the 220 swift w/55g NBT at 3925fps for the 500-600 yard shots. The swift was a heck of a lot more consistent then the .222 at hitting dogs in the wind, I shot a hell of a lot more dogs with my swift then the .222 just because the wind would push the .222's off course wayyy easier and wayyy more. If I had my 25-06 w/115g NBT at 3200fps I would have been trying for that 700-800 yard shot, but I did not bring it. I thought my swift could do it, but not in that Montana wind. I made some consistent hits right at 500 with my swift in the 20mph winds, but after that, it was just shoot and hope the wind pushes your bullet into them. THis is just my opinion, but I dont think a 223 is a great pdog gun at 500 yards in windy conditions. My swift was having a hard time and it launches bullets on average at least 600fps faster. Its not a matter of "IF" the wind blows, its a matter of how "HARD" the wind blows when your shooting pdogs. I would say it would be hard to beat the 204, 22-250, or 220 swift for 400-500. Drop can always be easily accounted for, its wind drift that gets you every time. Only good thing I see about the 223 is that its so cheap to shoot/reload and barrel life is so long, that you can afford to shoot and shoot and shoot. Kinda sounds like my .222, cheap to shoot and long barrel life, however that dont mean to much on the prairie at 400-500 yards, it eats those little bullets up, JMO.