If you are going to take shots out to 300 yards I would go with the 165 btsp's which have high ballistic coefficient to be less affected by wind. These bullets will retain alot more energy than the 130 gr bullets. Instead of worrying about shooting flat- which I think is overrated- practise alot with the rifle at different ranges to get a good feeling for the rifle and load. The .308 chambered in a quality rifle should be plenty accurate for hunting to 350 yards- in fact its accurate way beyond the distance that the bullet will have enough energy for a clean kill.It just depends on if the shooter has the knowledge and experience to make the shot or know not to take the shot if conditions aren't right.