Re: Bullet Drop
With your numbers there, the elevation coulumn is what you are interested in while moving from one zero range to another, dialing in the MOA correction or holding over either one.
If moving to a 200 yard target or zero, from a 100 yard zero, the bullet will drop below the LOS or point of aim (POA) 3.05" at 200 yards if scope is left zeroed at 100yds. Thus, you need to dial in 1.5 MOA (6 clicks on a 1/4 MOA per click turret) to compensate for the "additional" bullet drop.
The rifle, if zeroed correctly at 100 yards, will already have 2.0 MOA dialed in to it compensate for the first 2.1" of bullet drop over that distance. Another 1.75 MOA would also be already dialed in to compensate for the scope height above the bore, for a total of 3.75 MOA to get you up on the bull at 100 yards. The turret would be rezeroed and not really indicate this 3.75 MOA up elevation, but it has been compensated for in some way initially.
At the 100 yard zero point the bullet is at the top of its trajectory, so anything farther will see more bullet drop yet.
At 200 yards, the 3" of additional bullet drop can be compensated for by divided it by 1/100th the distance from the shooter to the target to determine the correction in MOA needed to rezero at that range.
For example; 3" at 200 yards = (3/2 = 1.5 MOA)
24" at 435 yards = (24/4.35 = 5.52 MOA)
Likewise, if you know it takes 14 MOA to zero at 700 yards, 14*7 = the total drop you were compensating for... 98"
This is the simple version. [img]images/icons/grin.gif[/img] This assumes 1 MOA is 1" and not 1.047" it really is, when you get way out there you may need to figure that into the equasion, or if your scope proves to be calibrated for yet something else too... [img]images/icons/wink.gif[/img]
Hope that helps some, sorry if I repeated stuff you already knew. [img]images/icons/wink.gif[/img] [img]images/icons/smile.gif[/img]