I'm getting mixed results on the net but I'm trying to get a mil drop for 2700 yards with a 338 lapua. I have 2 rounds that I'm trying to get info for. first is 250gr at 3100fps, and 300gr at 2750fps. My atmospheric conditions would be 23.00 inhg and 50 degress F. Thanks in advance if you can help me with the numbers.