bushmeister wrote:That's handy MB, can you run it again for 2" high at 100 yds?
Sure.
That would be zero'd at 35 yards.
35 yards = 0
50 yards = +0.8"
100 yards = +2"
150 yards = +0.4"
200 yards = -4.8"
250 yards = -14.1"
The program I'm using is not the most uber accurate, complicated program, but it works great for figuring out where I want to zero something for what I want to do.
It's the Norma precision Ballistics program on
THIS PAGE over at the right, choose Ballistic US. The BC for the 250 grn SST is 0.210 (at least according to midway, I can't find it on Hornady's page). And in general the sight height over bore for an AR15 is 2.7" (This is for the standard sights, and what most mounts will give you. If you are using some combination of rings and scout rail or just tall rings you will need to measure your own Sight Height over bore)
Mess with it a bit and you can adjust the sliders for zero and see how it effects the trajectory.
Here's what it looks like
Link to Screen Shot