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
Anybody put a BOSS on a custom barrel?
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: 1850419" data-attributes="member: 5302"><p>First, a 50 fps velocity spread can cause a 1/10ths inch/MOA vertical spread in drop at 100 yards. At 1000 yards, its 20 inches; 2 MOA. </p><p></p><p>If the vertical spread at 1000 needs to be reduced to 1/10th MOA, the slowest ones have to be fired about 2 MOA higher above the LOS than the fastest ones. Tuners set for this situation change the muzzle axis vibration frequency so bullets leave across a 2 MOA vertical spread. Only a 1/10th spread is needed for 100 yards.</p><p></p><p>Best place on the muzzle axis upswing is near its top. The least amount of angular change per microsecond of barrel time is next to the high and low point. Most is when the axis is half way between its upper and lower limits. Muzzle axes vibration frequencies are several hundred cps.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1850419, member: 5302"] First, a 50 fps velocity spread can cause a 1/10ths inch/MOA vertical spread in drop at 100 yards. At 1000 yards, its 20 inches; 2 MOA. If the vertical spread at 1000 needs to be reduced to 1/10th MOA, the slowest ones have to be fired about 2 MOA higher above the LOS than the fastest ones. Tuners set for this situation change the muzzle axis vibration frequency so bullets leave across a 2 MOA vertical spread. Only a 1/10th spread is needed for 100 yards. Best place on the muzzle axis upswing is near its top. The least amount of angular change per microsecond of barrel time is next to the high and low point. Most is when the axis is half way between its upper and lower limits. Muzzle axes vibration frequencies are several hundred cps. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Anybody put a BOSS on a custom barrel?
Top