Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistic software
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Hunter66654" data-source="post: 30736" data-attributes="member: 1461"><p>I used 4 different ballistic softwares to see how they compared. The set up was muzzle velocity = 3200, BC = .508, bullet weight = 155, sight height = 1.7,zero = 100 yd, temp. = 59, barometric pressure = 29.53, relative humidity = 78.</p><p></p><p>Results at 1000 yds 30 degree angle </p><p> </p><p>JBM bassistics -246.78 30=-213.9/-30=-209.</p><p>Pointblank -247.78 not available</p><p>Exbal -246.6 -206.9</p><p>Oehler demo -246.56 -211.56</p><p></p><p>Cosine of 30 degrees = .866</p><p>.866 x -246.8 = -213.73</p><p>.866 x -247.78 = -214.58</p><p>.866 x -246.6 = -213.56</p><p>.866 x -246.56 -213.52</p><p></p><p>I was surprised to see how close all 4 calculated the drop at 1000 yds with a spread of only 1.22 inches compared to a 7 inch spread in results at a 30 degree angle.</p><p>I own the Exbal software and the other 3 can be used or downloaded from the web. I would like to see the results from other software that you might be using with a similar setup and comments on accuracy when dealing with angle shooting. For example Exbal only allows you to input 1 number for your degrees when shooting up or down hill and JBM allows you to put in the angle as being up or down. As you can see from the results above this gives you 3 different answers and the JBM method using the up angle comes closest to matching the answer given by multiplying the cosine of the angle by the drop at 1000 yds with 0 angle. Which method is more mathmatically correct ?</p></blockquote><p></p>
[QUOTE="Hunter66654, post: 30736, member: 1461"] I used 4 different ballistic softwares to see how they compared. The set up was muzzle velocity = 3200, BC = .508, bullet weight = 155, sight height = 1.7,zero = 100 yd, temp. = 59, barometric pressure = 29.53, relative humidity = 78. Results at 1000 yds 30 degree angle JBM bassistics -246.78 30=-213.9/-30=-209. Pointblank -247.78 not available Exbal -246.6 -206.9 Oehler demo -246.56 -211.56 Cosine of 30 degrees = .866 .866 x -246.8 = -213.73 .866 x -247.78 = -214.58 .866 x -246.6 = -213.56 .866 x -246.56 -213.52 I was surprised to see how close all 4 calculated the drop at 1000 yds with a spread of only 1.22 inches compared to a 7 inch spread in results at a 30 degree angle. I own the Exbal software and the other 3 can be used or downloaded from the web. I would like to see the results from other software that you might be using with a similar setup and comments on accuracy when dealing with angle shooting. For example Exbal only allows you to input 1 number for your degrees when shooting up or down hill and JBM allows you to put in the angle as being up or down. As you can see from the results above this gives you 3 different answers and the JBM method using the up angle comes closest to matching the answer given by multiplying the cosine of the angle by the drop at 1000 yds with 0 angle. Which method is more mathmatically correct ? [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistic software
Top