Here is a sample of the data..
from the Ballistics Explorer program I mentioned. I tried to use some of the information from the site and from what you told me. Using the information from this program on my 22-250, I was able to hit a target dead center at 645 yards with a gun zeroed at 100 yards. The target was a 2'x2' piece of wood. I was impressed.
Name: PMC 2650mv 168wgt
Altitude: 800 feet
G1 BC: 0.463
Temperature: 30 øF
Muzzle Vel: 2650 f/s
Pressure: 29.53 in Hg
Sight Adj: 3.918 MOA
Humidity: 10%
Zeroed Rng: 100 yards
Wind Speed: 1 mph
Bullet Wgt: 168.0 grains
Wind Dir: 09:00 O'clk
Sight Height: 1.5 in
Range Slope: 0 deg
Close Zeroed Rng: 56.0 yards
Report Trace
Range Energy Path Drop Zero Adj Velocity
Yards ft-lb inches inches MOA f/s
0 2620 -1.50 0.00 ---- 2650
50 2430 -0.08 -0.63 0.2 2552
100 2251 0.00 -2.60 0.0 2456
150 2083 -1.36 -6.01 0.9 2363
200 1925 -4.27 -10.98 2.0 2271
250 1776 -8.87 -17.63 3.4 2181
300 1636 -15.30 -26.11 4.9 2094
350 1505 -23.71 -36.57 6.5 2008
400 1382 -34.27 -49.19 8.2 1925
450 1268 -47.19 -64.15 10.0 1843
500 1161 -62.66 -81.67 12.0 1764
550 1062 -80.92 -101.99 14.1 1687
600 971 -102.24 -125.36 16.3 1613
650 887 -126.90 -152.07 18.6 1542
700 810 -155.22 -182.44 21.2 1473
750 740 -187.55 -216.82 23.9 1408
800 676 -224.26 -255.58 26.8 1346
850 619 -265.77 -299.14 29.9 1288
900 568 -312.52 -347.94 33.2 1234
950 524 -364.98 -402.45 36.7 1185
1000 485 -423.63 -463.16 40.5 1140