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
MOA at 400 but can't get on target at 650?
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="Bruce Treloar" data-source="post: 1716220" data-attributes="member: 104002"><p>Freddie is pretty close to solving your problem. When shooting long distances it's not uncommon for a projectile to become unstable at a slower velocity hence the larger groups at a distance. That is why most shoot boatails with around a 10% advantage over flat base at longer distances. It appears your projectiles are stable but not at the longer distance. You can quicken the twist, use shorter projectiles or increase the velocity. Any one of these changes make the difference. I did have a mathematical equation to use when working out the above three but can't find it just now.</p><p>Do a bit more experimenting by placing a cardboard target every 100 yards right out to 1000 yards, check the holes for roundness. If elongated that will show the distance projectiles are becoming unstable. A big rock doesn't tell the whole story , invest in good quality targets which should help solve your problem.</p></blockquote><p></p>
[QUOTE="Bruce Treloar, post: 1716220, member: 104002"] Freddie is pretty close to solving your problem. When shooting long distances it's not uncommon for a projectile to become unstable at a slower velocity hence the larger groups at a distance. That is why most shoot boatails with around a 10% advantage over flat base at longer distances. It appears your projectiles are stable but not at the longer distance. You can quicken the twist, use shorter projectiles or increase the velocity. Any one of these changes make the difference. I did have a mathematical equation to use when working out the above three but can't find it just now. Do a bit more experimenting by placing a cardboard target every 100 yards right out to 1000 yards, check the holes for roundness. If elongated that will show the distance projectiles are becoming unstable. A big rock doesn't tell the whole story , invest in good quality targets which should help solve your problem. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
MOA at 400 but can't get on target at 650?
Top