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October 24, 2013, 12:20 PM | #1 |
Junior Member
Join Date: March 26, 2013
Posts: 3
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how much variance in case weight for charge change
I'm working in .308; I'm trying to make the loading a little simpler, if possible. My LC '07 averages 175.6g, and I use this case to develop charges. At what point in case weight variance, or in case volume capacity, do you need to recalculate the charge (e.g., if the case volume decreases 5% no need to change, but if 10%, change required)?
Many thanks, from a relative rookie. |
October 24, 2013, 12:51 PM | #2 |
Senior Member
Join Date: February 15, 2009
Posts: 8,927
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A "rule of thumb" for years with rifle cartridges has been for every 10 grains more of case weight, reduce the powder charge weight 1 grain. Or something like that.
Last edited by Bart B.; October 24, 2013 at 01:03 PM. |
October 24, 2013, 01:16 PM | #3 |
Junior Member
Join Date: March 26, 2013
Posts: 3
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Can't thank you enough for the advice.
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