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
How to find your most accurate load FAST.
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: 793486" data-attributes="member: 5302"><p>I've just used the same load others used in my match rifles. All the barrels for the same cartridge shot good enough to win matches with the same load. About 1/3 MOA at 300, 1/2 MOA at 600 and 3/4 MOA at 1000; at worst. Half a dozen or more .308 Win. barrels and four 30 caliber magnum barrels. I never worked up a load for each new barrel. Only once did I work up a load; a new Sierra bullet was introduced and I was part of a group developing loads for it.</p><p></p><p>I'm convinced most folks do not test their loads nor evaluate the groups shot properly. First off, you gotta shoot at least 20 shots per group to have it be meaningful to at least 80% confidence all groups will be no larger. Second, accuracy you can count on is the largest group shot with a given load. A rifle that shoots 5 groups from 2 to 5 units of measurements is more accurate than one that shoots 5 groups from 1 to 6 units of measurements. The 20-shot composite of four 5-shot groups will be larger than the biggest single 5-shot group. Most important, whatever shooting skills one has will be added to the accuracy of the rifle and its ammo. Nobody shoots a rifle and its ammo as accurate as when the rifle's clamped in a free recoiling test fixture. All of which is why I belive there are dozens (hundreds? thousands?) of "most accurate" loads for a given bullet and cartridge combination.</p></blockquote><p></p>
[QUOTE="Bart B, post: 793486, member: 5302"] I've just used the same load others used in my match rifles. All the barrels for the same cartridge shot good enough to win matches with the same load. About 1/3 MOA at 300, 1/2 MOA at 600 and 3/4 MOA at 1000; at worst. Half a dozen or more .308 Win. barrels and four 30 caliber magnum barrels. I never worked up a load for each new barrel. Only once did I work up a load; a new Sierra bullet was introduced and I was part of a group developing loads for it. I'm convinced most folks do not test their loads nor evaluate the groups shot properly. First off, you gotta shoot at least 20 shots per group to have it be meaningful to at least 80% confidence all groups will be no larger. Second, accuracy you can count on is the largest group shot with a given load. A rifle that shoots 5 groups from 2 to 5 units of measurements is more accurate than one that shoots 5 groups from 1 to 6 units of measurements. The 20-shot composite of four 5-shot groups will be larger than the biggest single 5-shot group. Most important, whatever shooting skills one has will be added to the accuracy of the rifle and its ammo. Nobody shoots a rifle and its ammo as accurate as when the rifle's clamped in a free recoiling test fixture. All of which is why I belive there are dozens (hundreds? thousands?) of "most accurate" loads for a given bullet and cartridge combination. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
How to find your most accurate load FAST.
Top