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
Reloading
Top three things to reduce ES and SD
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: 703317" data-attributes="member: 5302"><p>The above groups and numbers are interesting, but I'm a firm believer that at least 15 shots per test is needed to get meaningful numbers. When the ES is not about 3 times the SD, I suspect the numbers are not too meaningful. </p><p></p><p>Doug's numbers are the best ones in my opinion.</p><p></p><p>As far as what 1 kernel of Varget (or any powder for that matter), us humans cause more velocity spread due to our inconsistancies of holding the rifle than that kernel's presence or absense will make. Clamp a barreled action with a .22 Hornet chamber and bore, shoot 20 rounds with it through a chronograph, then put the barreled action back in the stock and shoot it the same hand held against your shoulder. Several folks I've talked with about this say the clamped version gets 1/4 to 1/3 smaller numbers; sometimes as much as 1/2 and average muzzle velocity is higher.</p></blockquote><p></p>
[QUOTE="Bart B, post: 703317, member: 5302"] The above groups and numbers are interesting, but I'm a firm believer that at least 15 shots per test is needed to get meaningful numbers. When the ES is not about 3 times the SD, I suspect the numbers are not too meaningful. Doug's numbers are the best ones in my opinion. As far as what 1 kernel of Varget (or any powder for that matter), us humans cause more velocity spread due to our inconsistancies of holding the rifle than that kernel's presence or absense will make. Clamp a barreled action with a .22 Hornet chamber and bore, shoot 20 rounds with it through a chronograph, then put the barreled action back in the stock and shoot it the same hand held against your shoulder. Several folks I've talked with about this say the clamped version gets 1/4 to 1/3 smaller numbers; sometimes as much as 1/2 and average muzzle velocity is higher. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Top three things to reduce ES and SD
Top