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
Hunting
Long Range Hunting & Shooting
Bullet drop with Elevation change
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="Hand Skills" data-source="post: 1697663" data-attributes="member: 103303"><p>Theoretically, it seems unlikely due the increase in elevation - an increase in elevation represents an increase in gyroscopic stability, because the air is thinner and offers less resistance (all other things equal). </p><p></p><p>Temperature has a similar effect. </p><p></p><p>For example at 5000ft and 80F air behaves the same, offering the same density as it does at 7000ft and 50F.</p><p></p><p>Ballistic computers with built in atmospherics are really nice because they calculate these variables for the user based on the present conditions.</p><p></p><p>This is something that demands consideration though if one is using a manual range card, or a BDC reticle/turret. What set of conditions were the holdovers calculated for? </p><p></p><p>When the conditions change, the flight changes. Pilots know this well and along with aeronautical engineers, and they use a term 'Density Altitude' to describe the density of air in a given condition. Density Altitude combines temperature, humidity and altitude all into one value.</p><p></p><p>This makes prediction a bit easier, but as [USER=51790]@Bisbee[/USER] clearly pointed out, there is no substitute for verifying a load in the conditions one intends to hunt in!</p></blockquote><p></p>
[QUOTE="Hand Skills, post: 1697663, member: 103303"] Theoretically, it seems unlikely due the increase in elevation - an increase in elevation represents an increase in gyroscopic stability, because the air is thinner and offers less resistance (all other things equal). Temperature has a similar effect. For example at 5000ft and 80F air behaves the same, offering the same density as it does at 7000ft and 50F. Ballistic computers with built in atmospherics are really nice because they calculate these variables for the user based on the present conditions. This is something that demands consideration though if one is using a manual range card, or a BDC reticle/turret. What set of conditions were the holdovers calculated for? When the conditions change, the flight changes. Pilots know this well and along with aeronautical engineers, and they use a term 'Density Altitude' to describe the density of air in a given condition. Density Altitude combines temperature, humidity and altitude all into one value. This makes prediction a bit easier, but as [USER=51790]@Bisbee[/USER] clearly pointed out, there is no substitute for verifying a load in the conditions one intends to hunt in! [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
Bullet drop with Elevation change
Top