seperating brass... > Reloading

Posted: 7/12/2008 6:46:25 PM EDT

how do you all seperate your brass?????? By a full grain...half grain? I am trying to separate brass for better accuracy and it stems from 165 - 168 grains (308 winchester)...how would you all group this?
thanks
jp

Posted: 7/12/2008 6:53:17 PM EDT

[#1]

May want to try it this way........

Step 8
Weigh the cases and separate by lots not greater than one grain in weight difference or about 0.5 percent.
Reason: We know that the outside dimension of each case is the same as all other cases. A weight difference between cases means that the interior is different in volume or the head is different in size. A case that is heavier than the others indicates less interior volume, and the pressure will be greater than for those cases that weigh less. Differential pressure results in variations in velocity and larger long-range groups.

Method: Weigh each case on a reasonably accurate scale such as this RCBS electronic scale. Pay close attention to ensure that the scale is reading accurately.

Taken from..............

www.6mmbr.com/jgcaseprep.html

Aloha, Mark

Posted: 7/12/2008 7:22:47 PM EDT

[#2]

Quoted:
May want to try it this way........

Step 8
Weigh the cases and separate by lots not greater than one grain in weight difference or about 0.5 percent.
Reason: We know that the outside dimension of each case is the same as all other cases. A weight difference between cases means that the interior is different in volume or the head is different in size. A case that is heavier than the others indicates less interior volume, and the pressure will be greater than for those cases that weigh less. Differential pressure results in variations in velocity and larger long-range groups.

Method: Weigh each case on a reasonably accurate scale such as this RCBS electronic scale. Pay close attention to ensure that the scale is reading accurately.

Taken from..............

www.6mmbr.com/jgcaseprep.html

Aloha, Mark

Thanks Mark, you always come through! I appreciate your help!
JP

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