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Rifles, Reloading, Optics, Equipment
Reloading
Do you sort by case weight? Loading To Scale
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<blockquote data-quote="Rusty54" data-source="post: 676864" data-attributes="member: 48086"><p>Note in the beginnig thread it may not have been clear that as I decrease CW below 94gr in the 5.56 I increase the charge weight by 0.1gr for each 1.0gr decrease. Sorry for the confusion!</p><p> </p><p>As I stated in my thread, absolute uniformity is a must, and my desire is to develope accuracy as well as reliability in autoloaders, but I found that uniformity in velocity in my 300 Win Mag as well as in the .243 win to be at worst in the teens and more often in the single digits especially in my .300WM and that is with several 10 round groups who's CW varied by 7.0 grain and required a 0.7 gr charge wieght variation.</p><p> </p><p>There certainly is a lot of information I have intentionally left out. Simply because I cannot put it all in the minimal space of this forumn. I actually tried to write it out longhand first and quit when I was almost through the 3rd page because there was too much left to cover that couldn't be put into such a limmited area. As I stated too, this process is not for most people, only those who are interested in large volume loading of one caliber who want the best uniformioty possible, but I believe it is of great interest that of the 3 cartridges I have tested they all seam to vary uniformly by 0.1gr charge weight per1.0gr case weight variation. Or to state it another way, in my testing no matter which of the 3 cartridges I have used, 0.1gr powder equals 1.0gr case weight variation. </p><p>This is much more work than the average handloader is willing to do, but I don't believe it is any great leap of understanding, so I don't expect many handloaders to accept this study or process that I have begun using and will use in the future for all rifle ammo I develope. I hope this helps those who are interested!</p></blockquote><p></p>
[QUOTE="Rusty54, post: 676864, member: 48086"] Note in the beginnig thread it may not have been clear that as I decrease CW below 94gr in the 5.56 I increase the charge weight by 0.1gr for each 1.0gr decrease. Sorry for the confusion! As I stated in my thread, absolute uniformity is a must, and my desire is to develope accuracy as well as reliability in autoloaders, but I found that uniformity in velocity in my 300 Win Mag as well as in the .243 win to be at worst in the teens and more often in the single digits especially in my .300WM and that is with several 10 round groups who's CW varied by 7.0 grain and required a 0.7 gr charge wieght variation. There certainly is a lot of information I have intentionally left out. Simply because I cannot put it all in the minimal space of this forumn. I actually tried to write it out longhand first and quit when I was almost through the 3rd page because there was too much left to cover that couldn't be put into such a limmited area. As I stated too, this process is not for most people, only those who are interested in large volume loading of one caliber who want the best uniformioty possible, but I believe it is of great interest that of the 3 cartridges I have tested they all seam to vary uniformly by 0.1gr charge weight per1.0gr case weight variation. Or to state it another way, in my testing no matter which of the 3 cartridges I have used, 0.1gr powder equals 1.0gr case weight variation. This is much more work than the average handloader is willing to do, but I don't believe it is any great leap of understanding, so I don't expect many handloaders to accept this study or process that I have begun using and will use in the future for all rifle ammo I develope. I hope this helps those who are interested! [/QUOTE]
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Do you sort by case weight? Loading To Scale
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