O.K., I'm a little new to this, so any help would be appreciated. This is my first post, but I've been lurking around for a while. I've tried a few of the "freeware" ballistic programs and an Excel spreadsheat that I found on another site in addition to the trial version of RSI's Ballistics program, but none of these seem to calculate the correct curve for my particular rifle and load. I'm shooting a 7mm RUM with 26" Douglas barrel. 139 grain Hornady SST's on 93.5 grains of Reloader 25. at 3465 FPS 15 feet from muzzle. One of the programs I'm using corrects this velocity to 3476 at the muzzle, so I've been using that number as muzzle velocity. I'm at about 975 feet above sea level and it's been about 50 degrees here. From shooting at various distances, I've determined that I'm +2.5in.@100Yds, +1.75in.@250, -10in.@400, and -14in.@450. The rifle also has a 20MOA one piece incline base on it, and I'm not sure if this is a factor. Heigth of the scope at the front bell is 1.828 center of bore to center of tube. Now for the question. Is there any way to take these 4 points and plot a graph where I can see drop every 10 feet from 100 Yds to 1000. Sorry this was so long, but thanks in advance for your help.