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
Canting - the right answer
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="TiroFijo" data-source="post: 110310" data-attributes="member: 974"><p>JBM, not Gustavo, but:</p><p></p><p>the "drop" number in your example is not "real drop" (vertical distance between the bullet and its line of departure) in my nomenclature, but the "bullet path" ((height of the bullet's point of impact in relation to sight line), and it is related to it by the following formula:</p><p></p><p>BP = -Drop(R) - R/R0*(SH + Drop0)- SH</p><p></p><p>SH = sight height</p><p>R = range </p><p>R0 = zero range</p><p>Drop0 = drop at zero </p><p>BP = bullet path</p><p></p><p>Remember the formula we use: H(R) (height of bore line in relation to sight line, as a function of range R) is the same formala as above, less the -Drop(R) part:</p><p></p><p>H(R) = R/R0*(SH + Drop0)- SH</p><p></p><p>X(R)=H(R)*sin ß </p><p>Y(R)=H(R)*cos ß - Drop(R)</p><p></p><p>I don't know the value of the "true drop" at any range in your example, but the results seem to correlate very, very well. If you can tell me the "true drop" at 100 yds I'll be able to check with more precision.</p></blockquote><p></p>
[QUOTE="TiroFijo, post: 110310, member: 974"] JBM, not Gustavo, but: the "drop" number in your example is not "real drop" (vertical distance between the bullet and its line of departure) in my nomenclature, but the "bullet path" ((height of the bullet's point of impact in relation to sight line), and it is related to it by the following formula: BP = -Drop(R) - R/R0*(SH + Drop0)- SH SH = sight height R = range R0 = zero range Drop0 = drop at zero BP = bullet path Remember the formula we use: H(R) (height of bore line in relation to sight line, as a function of range R) is the same formala as above, less the -Drop(R) part: H(R) = R/R0*(SH + Drop0)- SH X(R)=H(R)*sin ß Y(R)=H(R)*cos ß - Drop(R) I don't know the value of the "true drop" at any range in your example, but the results seem to correlate very, very well. If you can tell me the "true drop" at 100 yds I'll be able to check with more precision. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Canting - the right answer
Top