Thread: Altitude and ballistics

Originally Posted by chainsaw

7mm 150 ELdx 2900 FPS , 168 Berger CH 2930 FPS, 162 AMAX 2980 FPS.
30 cal 180 EH Berger 3040 FPS

Useing the 150eldx and 1000hpa at sealevel and 834.5hpa for 1500m asl assuming the same temp and humidity and a level shot at 800y I get

Drop= 158.6" vs 146.9" @800y

Windage in 5mph from 90 deg= 21" vs 16.8"

So if drop worked out at sea level and hunting/shooting in the tussock you could be shooting 11 or more inches high.

The forum wont let me upload the screenshots because they are too big a file apparently.