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
BC calc.'s
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="Brent" data-source="post: 10215" data-attributes="member: 99"><p><strong>Re: BC calc.\'s</strong></p><p></p><p>Len,</p><p>I haven't looked at the accuracy issue for a two range velocity derived BC. It is pretty easy to get if you have a rangefinder and a chrono though, two chronos makes it even easier, and a tad more accurate if they're calibrated together. I think it's more accurate than the Oehler 43's acoustic target because the distance is less critical, much less. </p><p></p><p>The most important thing for me is simply to use the one that matches my fired drops, I know what the MV, temp, alt and BP is, so BC is the only other variable that will modify the trajectory. </p><p></p><p>Once I establish this baseline as my sight in perameters, the program is used to modify them as the other variables change from day to day, air density being the <strong>MAJOR</strong> influence if you have a stable MV with temp insensitive powders. </p><p></p><p>After 800 yards you really notice the subtle MV or BC changes.</p></blockquote><p></p>
[QUOTE="Brent, post: 10215, member: 99"] [b]Re: BC calc.\'s[/b] Len, I haven't looked at the accuracy issue for a two range velocity derived BC. It is pretty easy to get if you have a rangefinder and a chrono though, two chronos makes it even easier, and a tad more accurate if they're calibrated together. I think it's more accurate than the Oehler 43's acoustic target because the distance is less critical, much less. The most important thing for me is simply to use the one that matches my fired drops, I know what the MV, temp, alt and BP is, so BC is the only other variable that will modify the trajectory. Once I establish this baseline as my sight in perameters, the program is used to modify them as the other variables change from day to day, air density being the [B]MAJOR[/B] influence if you have a stable MV with temp insensitive powders. After 800 yards you really notice the subtle MV or BC changes. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
BC calc.'s
Top