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
Riddle me this? Ballistic calc vs reality mismatch...
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="entoptics" data-source="post: 1981221" data-attributes="member: 104268"><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /></p><p></p><p><u><strong><em>This is not how this works. </em></strong></u></p><p></p><p>The 498 you get from a 5° incline at 500 yards LOS distance, is the horizontal component, over which gravity is accelerating the bullet down.</p><p></p><p>The point of impact shift is the drop the bullet would have at 500 yards minus the drop at 498 yards, and not 500 minus 498 yards!!!</p><p></p><p>The actual POI shift for a 2° incline at 500 yards with my bullet and velocity is ~0.0007 yards...or ~0.05". In other words...nothing...</p><p></p><p>I only addressed the incline issue because someone brought it up, and I wanted to be perfectly clear and rigorous in my responses. <em><u>At 500 yards, in my scenario, it is completely negligible.</u></em></p><p></p><p></p><p></p><p>Also, you didn't read very carefully. I did not "give my rangefinder bad data". My rangefinder doesn't calculate drops. I used LOS distance in the rangefinder, and then input the incline angle in the ballistics software. <u><em>This is the most rigorous way of addressing incline, period</em></u> (though as has already been pointed out, 2° is negligible at these distances anyway).</p><p></p><p>If you'd like more information on how incline affects POI, I'd suggest googling around, and/or starting a new thread on the topic.</p></blockquote><p></p>
[QUOTE="entoptics, post: 1981221, member: 104268"] :eek: [U][B][I]This is not how this works. [/I][/B][/U] The 498 you get from a 5° incline at 500 yards LOS distance, is the horizontal component, over which gravity is accelerating the bullet down. The point of impact shift is the drop the bullet would have at 500 yards minus the drop at 498 yards, and not 500 minus 498 yards!!! The actual POI shift for a 2° incline at 500 yards with my bullet and velocity is ~0.0007 yards...or ~0.05". In other words...nothing... I only addressed the incline issue because someone brought it up, and I wanted to be perfectly clear and rigorous in my responses. [I][U]At 500 yards, in my scenario, it is completely negligible.[/U][/I] Also, you didn't read very carefully. I did not "give my rangefinder bad data". My rangefinder doesn't calculate drops. I used LOS distance in the rangefinder, and then input the incline angle in the ballistics software. [U][I]This is the most rigorous way of addressing incline, period[/I][/U] (though as has already been pointed out, 2° is negligible at these distances anyway). If you'd like more information on how incline affects POI, I'd suggest googling around, and/or starting a new thread on the topic. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Riddle me this? Ballistic calc vs reality mismatch...
Top