I've shot thousands of rounds at 1K with a 14x Leupold. I've also shot in the mid 190s with a 12x in 1000yd F-Class matches. Go clear over power every time. I love the 338 Lapua. Don't mess with Berger bullets. I shoot them in every thing else, but I know several people that have not been able to get them to shoot. The lapua was set up to shoot 250s, but Hornady 285s look good.