I currently own 5 ballistic programs and just realized that they all have one huge problem! They don't adjust for elevations changes correctly when it comes to the distances in which you zero your guns. Here's the scenario: You are shooting at 3000 ft elevation. You sight in your rifle so that it is exactly 3" high at 100 yards. Your program says that for your particular load, your zero is 300 yards. Now, you go up to 8000 feet on a mule deer hunt. You bring your laptop with you and punch in your pet load and enter in the elevation of 8000 feet. The program now says that you are shooting 3.2" high at 100 yards because of the elevation change. You assume that because the thinner air makes your gun shoot .2" higher than before that you are now zeroed at a little over 300 yards. But you look to the 300 yard drop chart and IT STAYED THE SAME!! You are still zeroed at 300 yards according to the computer, but you and I know that that isn't really the case in real life. You should now be zeroed farther than 300 yards. Am I right?? How does the computer compensate for this phenomenon or does it? Is there a program that will actually re-adjust your zero at different elevations? Very stumped. I might need six programs if there is one that does adjust. My list of programs includes Infinity, Exbal, Precision shooters workbench, Excel, and Load. P.S. Exbal will correct for this same phenomenon when it comes to angle shooting but not elevation changes as mentioned. For instance, the 3" high gun at 100 yards is zeroed at 300. Now shoot at 35 degree angles, and it shows that the gun is 3.3" high at 100 and it is now zeroed at 345. They got half the problem fixed. Why didn't they fix the other half? I've been dazed and confused for so long it's not true.... /ubbthreads/images/graemlins/confused.gif Oh, sorry. Started singin' again.