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
Gel Test Data part 2
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="RockyMtnMT" data-source="post: 2672663" data-attributes="member: 7999"><p>Hats off to everyone. It has stayed civil.</p><p></p><p>I never said that bc doesn't have any advantages. bc is a very good indication of how fast a bullet will lose velocity. It is the coefficient of drag. It is not the coefficient of drift. There is not formula, that I know of, that will calculate how much wind will effect the flight path of a bullet. My point is that bc is the only formula that we have, so it is used as a drift calculator. I think at best it will give an indication of drift. Wind is never consistent anywhere, so it is going to be very tough to prove this stuff, without a shadow of a doubt. All I know, is that over the years of testing different bullets from different rifles at the same shooting session, inevitably I wind up holding nearly identical wind for all the rifles in the session. This has never made sense, but I would just let it go. Obviously, this did not hold true with 44g 22 cal compared to a 260g 33 cal. I know what we all do. If the drift is more or less than what we calculate we chalk it up to not getting the wind exactly correct.</p><p></p><p>You all want to test the theory, by all means do! I would love to hear more results. Shoot different rifles with different bullets in the same shooting session. See what the difference is. Is it more or less diff between bullets than expected?</p><p></p><p>Alex Wheeler made a comment a few months ago that really got me cooking on this whole wind drift thing. He said he wished he had quit paying attention to bc a long time ago in the 1000y bench rest competition. I paraphrased. His being able to shoot smaller aggregate groups in switching wind with a lower bc bullet is a true indication that using bc to predict drift is not exact. Maybe not even beneficial.</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 2672663, member: 7999"] Hats off to everyone. It has stayed civil. I never said that bc doesn't have any advantages. bc is a very good indication of how fast a bullet will lose velocity. It is the coefficient of drag. It is not the coefficient of drift. There is not formula, that I know of, that will calculate how much wind will effect the flight path of a bullet. My point is that bc is the only formula that we have, so it is used as a drift calculator. I think at best it will give an indication of drift. Wind is never consistent anywhere, so it is going to be very tough to prove this stuff, without a shadow of a doubt. All I know, is that over the years of testing different bullets from different rifles at the same shooting session, inevitably I wind up holding nearly identical wind for all the rifles in the session. This has never made sense, but I would just let it go. Obviously, this did not hold true with 44g 22 cal compared to a 260g 33 cal. I know what we all do. If the drift is more or less than what we calculate we chalk it up to not getting the wind exactly correct. You all want to test the theory, by all means do! I would love to hear more results. Shoot different rifles with different bullets in the same shooting session. See what the difference is. Is it more or less diff between bullets than expected? Alex Wheeler made a comment a few months ago that really got me cooking on this whole wind drift thing. He said he wished he had quit paying attention to bc a long time ago in the 1000y bench rest competition. I paraphrased. His being able to shoot smaller aggregate groups in switching wind with a lower bc bullet is a true indication that using bc to predict drift is not exact. Maybe not even beneficial. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Gel Test Data part 2
Top