7mm 180 gr Hornady ELD has .797 Berger 184 Hybrid target has .696 . How does ELD have a 100 more BC?
Good info. I am sure Berger would agree.Taken from the Hornady website, note the first bullet point.
The Ballistic Coefficient
Before discussing this topic in more detail, let's dispel some myths surrounding it. Whatever you may have heard before, these are the facts:
- There is no such thing as an absolute and invariable ballistic coefficient (B. C.)
- Ballistic coefficients are only one factor in bullet selection for different kinds of shooting.
- A ballistic coefficient can change with reference to (1) altitude, (2) temperature, (3) atmospheric pressure, and (4) relative humidity.
- Ballistic coefficients are measures of a bullet's relative efficiency.
- Ballistic coefficients are not measures of a bullet's "goodness."
- Higher B.C.s do not necessarily make a bullet "better."
- Lower B.C.s do not necessarily make a bullet "worse."
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External Ballistics - Hornady Manufacturing, Inc
External Ballistics Video Library...www.hornady.com
They are putting out some useful info. Not end all/ be all, but useful.
I loaded some of these in my 300win in a bartlein with about 80 rounds on it. It's only doing 2745 right now. What were you seeing for velocity?Recently had the opportunity to shoot out to 1500 yards with 300 WM and Hornady 225g 30 cal ELDM. Using Hornady 4DOF app and inputting current range values as closely as possible that day, what was stated as come ups from Hornady app was within 1/2 minute all the way to 1500. Pleasantly surprised!!
Below is the recommendation from Hornady as to the use of their BC's for the ELD's. you are left somewhat to your imagination as to the interpretation of the values. Are they single point or average to velocity. I interpret the these as single point values and I would ignore the 2.25 value in most cases and use the 2.0 value until my velocity drops below 1950 fps then use the 1.75 number.
Below is from Berger's No BS BC.
- Mach 2.25 (2512 fps* and above) - Velocities above 2,500 fps and distances out to 300 yards.
- Mach 2.0 (2232 fps*) - Mid-range shooting where the bullet spends time in flight after slowing down.
- Mach 1.75 (1953 fps*) - Long-range shooting where much of the bullet flight occurs after velocity loss
"Berger Bullets is committed to the success of our customers, which is why we publish BCs which are measured from live fire doppler radar testing, and averaged from 3000 to 1500 fps".
I loaded some of these in my 300win in a bartlein with about 80 rounds on it. It's only doing 2745 right now. What were you seeing for velocity?
I did smash one through an elk at 631 and it performed as desired.
Sierra has been doing that for some time. They have also stayed with G1 and the G1 varies much more over the velocity range than G7. Regardless of the data it doesn't replace Dope since all are estimates at best.Ever since I can remember Sierra has given 3 different BCvalues based on MV.