80gr eld-m (Bryan Litz tested this bullet truce bc is .505) I used the .505 bc out to 1k and it’s held true. Next would be the 88 Eld-M .545 bc hold true to 1k as well. You could throw the Berger 80.5 into the mix very good 600yd bullet. The 75 eld-m is a good one as well.