I have been looking into various 7mm bullets and the associated trajectories and have come up with the following results.
This data is based on a .284 WIN case loaded to as close to 62K PSI (arbitrary pressure) using Quickload as I could get with each bullet.
The BCs are from the QuickTarget database.
The trajectories to 1,000 yards resulted in this plot:
I don't understand how the 140 Accubond ended up with the least drop of all the bullets plotted. Anyone have any ideas what's up with that?
In order of least drop to most:
168 Berger VLD
180 Berger VLD
175 Sierra SMK
168 Sierra SMK
From looking at this, IMHO, it looks almost obvious that the 168 SMK BC in Quickload is off a bit.
Also, there does not seem to be a whole lot of difference between most of these bullets as far as drop is concerned.
Wind drift may actually be a bigger driver than drop in a choice betweeen these bullets for long range ...
This is interesting, this plot is for a 10 MPH headwind
This is the wind drift with a 20 MPH wind at 90 degrees.
And then the resulting plot of energies:
Anyone find this useful?