Originally Posted by
Champlain Islander
Just thinking out loud. I wonder what the difference between 25 and 100 would be if the rifle was sighted in to zero at 350 yds?
According to my ballistic calculator, a 165gr pointed soft point boat tail 3006 bullet with a BC of 0.437 starting out a 2808 fps will be:
25 yds. - .602 inches high.
50 yds. - 2.853 inches high
100 yds- 5.984 inches high
at 200 yards, it will peak out at 8.332 inches high.
at 350 yards it will be dead on.
With that load, to be 12 inches high at 100 yards, you would be need to sight in to be aprox. 2.111 inches high at 25 yards.
According to my calculator, zrex.. is right.
The set up is with the center of the scope 1.5 inches above the barrel.
Think about it. In the scant distance of 25 yards the bullet traveling at 2808 fps is going from -1.5 inches low to about 2 inches high.
It will top out at 22 1/2 inches at 300 yards, and be dead on at 523 yards.
To sum all that up, there is a big difference in being dead on at 25 yards, and 2 inches high.
C. Davis