Re: Ballistic AE .. what is it missing that you want..
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: AshesToAshes</div><div class="ubbcode-body">Hi, it's Jonathan...
The powder idea is a good idea, and I pursued this a while back, but there's very little credible data (and no real good formulas) out there to calculate velocity shift due to powder temperature. I have considered adding a velocity factor in the reloading section that you could populate with an estimate, for example 10 fps per degree (or whatever), but it would all be very approximate. Any other apps I see trying to do this are approximating as well, and not doing a great job at it.
As for metric... just go into Settings and flip whichever units you like to metric. You can change distance, atmosphere, and all other units.
Upgrades will be free through the App Store as soon as Apple approves 3.4... they'll always remain free (that's just how the store works)
Litz G7 BCs are in the advance edition and iPad edition.
I've updated the website with a lot of new upcoming features and screenshots. Feel free to check it out at
http://ballistic.zdziarski.com
Cheers </div></div>
That seems like a logical explanation. However, are you saying that the temperature stability of a given powder isn't a notable variable?
What I was suggesting is that you not use a formula to calculate the shift for a user, but rather, let the USER input his own shift.
IF I have the ability to input a 180 fps shift over 50 degrees, it equates to only 3.6 per degree. Not much, but over 50-60-or 100 degrees, it's significant.
I realize you cant do this for every powder, for every person...but if there was a place to let the user do the test, and insert his own data (truing the powder temp variable), then it might be something usable.
I hunt during the winter when it's below zero...so I (plan to) test my loads for velocity by just putting them in the freezer over night and shooting them through the chrony at freezer temps. (probably 38 degrees).
I could input this temp into the program with a corresponding velocity or drop test, and do it again at 80 degrees, and enter that temp and corresponding velocity or drop test into the program to give a TRUE powder temp variable for that bullet, powder, charge combo.
Then, when my Kestrel gives up an actual Air Temp, (that my ammo has been acclimated to in a hunting or comp situation), the program will supply dope, in relation to actual velocity from an ACTUAL user provided powder temp scale.
Maybe to much, maybe my understanding of external ballistics isn't up to snuff yet...but it seems to make sense in my head
