Well my son and I did a 1,000 yard F/TR with a .308 and now he wants to try a 600 with a .223. However, I have a question for the experts. Last time out, we shot Hornday 68g at 400 yards and it shot VERY well.

I was hoping to use this ammo but do you think I need a heavier grain in the event we have some wind or is the 68g good for that distance? The twist is 1 in 9.