Re: HELP Ballistics program wrong
Ballistics programs are just calculators, junk in junk out kinda things. The first steps to having accurate corrections is to know how you scope adjusts, they can be all over the map, few move in actual MOA. I lock my gun in a vice and at a measured hundred yards turn the turret through the full range while watching a surveying stick to check what I'm turning so I can give the program the actual value my optic adjusts in.
Then I take a tall piece of card board on a wood frame and us one aim point at the top then walk it out every 100yrds and shoot a group with the same aim point, this will give you your actual bullet drop, then I re shoot all that but dial the drop value I have measured from actual shooting to verify that everything is GTG! Then you know what your rifle and scope actually do so that you can take that to a ballistics program and tweak it to get on target, I tweak the BC's little under a 1000yrds but a change in velocity will usually get you on once you've verified you rig. Crony's can be a week link in the process.
How you deal with the weather data is very important and can really though you of, make sure you use deal with barometric pressure correctly, I think there is a sticky that deals with this in one of the forums. Don't add an elevation with station pressure is the basic idea.
"Pain is weakness leaving your body"
Last edited by bigngreen; 11-15-2010 at 08:54 AM.