I am using bergers ballistic program on their website, I shot at 300,600,1000 yards results were:
300 called for 3.93 moa. Actual 3.5
600 called for 12.46. Actual 12.0
1,000 called for 27.71. Actual 30.0
Specs: 33 nosler
M.V. 2,780 fps
263 grain hammer hunter
B.C. .325 G7 (from website)
Elevation 1,400 ft
Temp. 59*
No other factors added in.
What I'm looking to do is get chart to mirror real moa from drops @ 1,400 ft so I can adjust elevation to 9,500 ft for Colorado Hunting trip.
Do I just adjust the B.C value until it reads what I got from drops?
Thanks
Hmmm….. I'm not sure what you have going on lol. I inputted a bunch of scenarios into my Shooter Application and nothing is adding up or coming close.
There is a big difference between shooting out to 500 yards vs. 1000. Out to around 500 is easily tweekable, but 1,000 you have to have very precise spot on info entered in to trig. out properly. Your best best is to buy a phone ap like Shooter Ballistics or Applied Ballistics and plug all the pertinent precise info in.
Barrel twist rate:
Twist direction:
Sight/scope height:
Sight offset:
Elevation units:
Turret Graduatons:
same as above for windage:
Elevation correction factor: (this can be used to tweek elev. or if scope doesn't track perfectly to a 1.0:1.0 Moa ratio)
Bullet diam:
Bullet weight:
Bullet length:
MV:
Velocity variation and powder temp: (if you put in the time for variances)
Atmosphere std:
Drag Model G1/G7:
Zerod range:
Sighted in/Zeroed atmosphere:
Altitude:
Baro pressure: (best to use station pressure if you have a device that captures it, I.E. Range finder, Kestrel)
Temp:
Humidity:
Coriolis comes in to play a bit at 1,000 but the least of your worries now.
Then what you're actual weather conditions/Atmosphere where you're shooting at during said shooting session vs where you zeroed in at.
Going from 1,400' to 9,500' shooting at 1,000 yards, you'll have to have most or all the above info to be accurate. A simple elevation change won't cut it with what info you're currently using.
Like I said I tried a bunch of tweaking and different scenarios and couldn't really get close to what you're actuals are. I tried scope height from about 1.6 to 2.1" (guessing), changed velocities by a couple hundred FPS, changed BC dramatically, changed scope elevation correction factors, tried to guess on your atmospheric conditions zeroed vs will be shooting at etc…. About the only thing I didn't try was changing your zero yardage. I'm assuming you zeroed in at 100 yards? A lot of pertinent and necessary info missing to get it to all add up.