Range Report Modification of JBM Ballistics DA Card Program

[Lindy]

I noted in my web page on making Density Altitude ballistic cards that JBM Ballistics would not accept a DA input below -1000 feet.

Making Ballistic Cards Using Density Altitude

I dropped the author of that program a note this morning, requesting that he consider reducing that minimum DA, as it was -1800 feet when I got up this morning, and lots of places, like Afghanistan, it's colder than that.

To my surprise and astonishment, he replied that he would - and did!

Now I have to go revise my web page <grumble>.

I'm pleased to do so. Now there's yet another reason to let JBM Ballistics do the job. Bryan Litz described JBM Ballistics as the Gold Standard for ballistics programs - and I agree.

Good job!

Here's what the new part of that page looks like:

And now I'm off to revise my page.

 

[Victor N TN]

Re: Modification of JBM Ballistics DA Card Program

Thanks for the heads up Lindy. I appreciate it.

 

[richardj]

Re: Modification of JBM Ballistics DA Card Program

I was already using it and didn't know he updated it... just used the JBM for my new load and was at the range with a DA of -1200ft yesterday..

RJ

 

[Chiller]

Re: Modification of JBM Ballistics DA Card Program

thank you Lindy.

 

[Short-bus]

Re: Modification of JBM Ballistics DA Card Program

nevermind, need to learn to read.

Branden

 

[DaveV]

Re: Modification of JBM Ballistics DA Card Program

Thanks for pushing the ball forward, Lindy. I'm amazed that in a commercial world, there is a "Gold standard" program available for FREE! Thanks JBM!!