Thank you for your reply. I will probably be shooting them around 3200-3300fps out of a 30/338 Lapua Imp.with a 34" barrel with a 1-10" twist. Do you think this combo will do well out to 1800yds? Oh yeah, they are the VLD's.
Plug in .680 as a starting point, both types I have seen are VLD's, one has an ever so slightly rebated boat tail, and a concave section in the base of the boat tail. The other type has a more normal boat tail design. 1800 yards is certainly within reach depending on the altitude, (relative air density).