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How critical is measuring powder to .01 grains

 
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  #1  
Old 03-24-2013, 07:13 PM
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How critical is measuring powder to .01 grains

In the forum the accuracy nodes in a ladder test range between 1 to 2 grains With accuracy stable in that range. If that node is between 60 to 61 grains, and you decide to load 60.5 grains why is loading to .01 grains critical?
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Old 03-24-2013, 07:37 PM
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Re: How critical is measuring powder to .01 grains

Weighing powder to 1/10 is adequate for any application. You'd drive yourself insane trying to weigh to 1/100. With your example of the node being between 60 and 61 gr, some may load 60.1, 60.2, etc, as a tenth of a grain can make a difference at 1k yards. Hundredths? No.
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Old 03-24-2013, 08:11 PM
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Re: How critical is measuring powder to .01 grains

Thanks. That allows more time on brass prep and shooting.
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Old 03-24-2013, 09:05 PM
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Re: How critical is measuring powder to .01 grains

Noob reloaders often get hung up on powder charge consistancy to meaningless degrees. I don't even know of a practical reloading scale that reads to .01 grain and it wouldn't matter if we could; there's usually more effective variation than .1 grain of powder between individual primers and cases.
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Old 03-25-2013, 10:01 AM
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Re: How critical is measuring powder to .01 grains

First, let's not forget that a grain isn't just a grain, nor is a tenth of a grain just a tenth of a grain; it's a percentage of the total charge weight. A tenth of a grain can be a fairly substantial amount of powder if you're loading a 25 ACP or even a 22 Hornet. It is absolutely insignificant if you're loading a 30/378 Weatherby. There, even a full grain of powder probably won't show nearly as much influence on pressures as that tenth would in the Hornet.

Match the percentage to the case being loaded, and you'll save yourself a lot of frustration down the road.
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  #6  
Old 03-25-2013, 11:10 AM
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Re: How critical is measuring powder to .01 grains

Thanks I am loading 270wsm and 300rum. .1 of a grain should be sufficient
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Old 03-25-2013, 01:00 PM
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Re: How critical is measuring powder to .01 grains

.1 is fine with me, I don't worry about the .01 cuz the fluxuating differences in the atmosphere and other variables have much more affect than the .01 difference in powder. infact on my one gun I tested it took me .03 difference before I saw the affects on the Chrono.
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