New Ballistics Program

When inputting my long gun (.260) values into this program and the Hornady free program, I get a 2 MOA difference in come up for 600 yards with a 200 yard zero. Berger says come up 11 MOA, Hornady says 9 MOA, and neither are what actually happens! The proper answer, proved by many 142 SMK's being sent down range, is 10 MOA. I guess any of these programs are a good starting point though to get you on paper.
Richard
 
Eric
Thanks to you and Berger Bullets for all of your dedication and support of the long range shooting sports!

Wolfdawg
 
model14 said:
When inputting my long gun (.260) values into this program and the Hornady free program, I get a 2 MOA difference in come up for 600 yards with a 200 yard zero. Berger says come up 11 MOA, Hornady says 9 MOA, and neither are what actually happens! The proper answer, proved by many 142 SMK's being sent down range, is 10 MOA. I guess any of these programs are a good starting point though to get you on paper.
Richard
Click to expand...

Richard,

I encouarge you to pass your observations along to Bryan Litz at bryan.litz@bergerbullets.com. The science of predicting trajectories is well proven to be reliable. I know that Bryan will be eager to determine why your results differ from those predictions. There is a fact based reason.

Regards,
Eric
 
Richard,

If you can provide me with some of the other variables of your system, I'll be happy to help find where the problem might be.

What's the muzzle velocity of your 142's?
What's the height of the sight above the bore?
What's your altitude?
Iron sights or scope?

The above is just a short list of questions that may allow me to narrow in on the problem.

I've used that same bullet from a .260 Remington to verify the BC's and the Ballistics program. My results were that the predicted impact was within 1" of actual at 1000 yards.

-Bryan
 
Eric and Bryan

Great program. For my 6mm Dasher it was right on the money when compared to actual results in the field. James Mock
 
Interesting to have a extra ballistic program if could only open it i must not have the right software on my PC to open .
Stan
 
On this program it does not ask for ground elevation above sea level. Is this an important factor?
 
Larry,

The effects of altitude are captured in the Pressure input.

If you hover the mouse pointer over the word 'Pressure' on the program, a table will pop-up showing you the standard pressure for altitudes up to 10,000 ft. Input the pressure that corresponds to your altitude.

-Bryan
 
richard sir

i had differences as well for years with many progams,the problem was baro or alt,at the time i was testing.the only times the ballistics in any progam matched was when the real life baro or alt was read and inputed there and then as it changed.i have had to correct almost minute by minute to keep up with baro at times and really suprised me how fast it was changing. it would be nice to have a small hand held computer for in the field calculations as the baro changes .well eric and brian ,what do ya think about a berger hand held pda ? tim in tx
 
Bryan,
I have just now read your response to my comment concerning the Berger ballistics program. I must not have inputed the data correctly, because in doing so now, I get the exact same results with your program and the Hornady program. My error was probably in not entering the altitude (baro pressure) correctly, or perhaps some other data. I apologize for being so quick to point out my first results without being more careful with data entry. :eek:

Here is my input:
Caliber .260
Barrel: 30", 8.5 twist
Bullet: 142 SMK HPBT, BC=.495
Powder: 43 grains RE17
Velocity: 2935 (10 data points, ES=8)
Scope height: 2.5"
Range elevation: 1000 feet (used 28.86 pressure)
Air temperature: 24 deg f
Zero range: 200 yards

Results: 10.7 MOA "come up"
Exactly the same for both Berger and Hornady programs.

Actual "come up" 10 MOA, but I have no idea how accurate my scope clicks are (Nikon Monarch 6.5-20). I will run your recommended tests to find out. Also, I have no idea what effect the wind was having when I sighted in at
600.

The Hornady program does not seem to allow cross-wind drift calculations.

In hind sight, with all of the uncertainty in variable inputs (not very accurate), I will say that any ballistics program that puts me within 6" at 600 yards is very good. That is what sighters are for!

Richard
 
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Nice clean interface.

I'm lazy, can the bullet info be selectable from a list?

What is difference between G7 and G1 BC?
 
Just a heads up about the CD

Here is an email exchange I had with Bryan about the CD provided program that came with his excellant book.

The end result is to use the book for G7 data on bullets and use the on line Berger program for output in MOA and printing.


Question

I bought your book with the CD and have a link the the Internet Berger program and find I need some help.

The Berger Internet program allows the output to be supplied in MOA and Inches - your CD program output is in inches only. Secondy, I cannot find a way to print from the CD suppied program as is possible from the Berger Internet program.

Why not the same features with your CD? I really like the ability to use the CD supplied program but I need to be able to get output in MOA and to be able to print the results.

George,

Reply

Thanks for your interest.

To answer your question, at the time I wrote the program for the book, I didn't know how to make the print file. Also, I didn't include the MOA option because the program was intended to be of academic use, mostly for comparison and learning purposes. By the time I wrote the Berger program I'd learned how to do the text output, plus the Berger program is more geared toward practical application which is why it was important to have MOA/MIL output options.

Take care,
-Bryan
 
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