Originally Posted by rcamuglia
At 688 yards, the 105 started at 3100 would be at 1900 fps....



Maybe at sea level.

Not much in WY under 5K ASL.

Code

Tabular trajectory data at Non-Std. Atmosphere
 Gunsite altitude : 5000 ft.
 Air density      : 0.065706 lb./ft�
-------------------------------------------------------------------------------------
 Gun / Ammunition : 243 Win
 Bullet           : .243, 105, Berger VLD
 Bullet weight    : 105 grains or 6.80 Grams
 Muzzle velocity  : 3100 fps
 Crosswind speed  : 10 Mph 
 Ballistic Coefficient(s) (G1): 
 C1=0.532@V>0 fps;


 Range  Velo Time of  Energy   Path    Deflection    Total  Sight correction  Target
        city  flight            to    at crosswind    drop   for setting new   lead
                                LOS    of 10.0 Mph             zero range     20 fps
-------------------------------------------------------------------------------------
�Yards   fps     s    ft.lbs.   in.    in.     MOA     in.   Clicks     MOA     yds �
-------------------------------------------------------------------------------------
|    0  3100  0.0000   2240    -2.0    0.0   -----     0.0   ------    -----    0.00
X  100  2943  0.0992   2019     0.0    0.4    0.40     1.9      0.0     0.00    0.66
|  200  2791  0.2037   1816    -2.0    1.8    0.86     7.7     +2.8    +0.97    1.36
|  300  2645  0.3147   1631    -8.6    4.3    1.37    18.1     +8.0    +2.74    2.10
|  400  2503  0.4314   1461   -20.1    7.8    1.86    33.5    +14.0    +4.81    2.88
|  500  2366  0.5537   1305   -36.9   12.3    2.35    54.2    +20.5    +7.07    3.69
|  600  2233  0.6845   1163   -60.2   18.3    2.91    81.3    +27.9    +9.59    4.56
|  688  2120  0.8064   1048   -86.5   24.7    3.43   111.0    +34.9   +12.02    5.38