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
A case for BDC Turrets
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="Bart B" data-source="post: 508985" data-attributes="member: 5302"><p>Hope the bullet you use has good ballistic data for it. It needs 4, maybe 5 different values for the different velocity ranges it'll fly through the air at. Few bullet companies supply such data. And it needs to be based on actual firing tests producing the time of flight in different velocity ranges.</p><p></p><p>And you'll need to chronograph your load to get a starting muzzle velocity, too.</p><p></p><p>Having shot .308's at 100 feet elevation all the way up to 8200 feet in temperatures from 30 to 105 degrees at 600 yards, there's easily a 1.5 MOA spread in elevation settings I had to make to compensate for atmospheric conditions using the same load.</p></blockquote><p></p>
[QUOTE="Bart B, post: 508985, member: 5302"] Hope the bullet you use has good ballistic data for it. It needs 4, maybe 5 different values for the different velocity ranges it'll fly through the air at. Few bullet companies supply such data. And it needs to be based on actual firing tests producing the time of flight in different velocity ranges. And you'll need to chronograph your load to get a starting muzzle velocity, too. Having shot .308's at 100 feet elevation all the way up to 8200 feet in temperatures from 30 to 105 degrees at 600 yards, there's easily a 1.5 MOA spread in elevation settings I had to make to compensate for atmospheric conditions using the same load. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
A case for BDC Turrets
Top