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Powder measures and Extruded powders
#6106343
12/28/15 08:19 PM
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Joined: Nov 2007
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RiverRider
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To keep from derailing another thread...
Who has figured out techniques for metering extruded powders and keeping variations down to a couple of tenths of a grain? It has never worked for me, and I've used five or six different measures.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106345
12/28/15 08:21 PM
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RiverRider
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And I'll add: I don't load with variations greater than the accuracy potential of any scale I use.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106348
12/28/15 08:24 PM
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ChadTRG42
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It can't, by the nature of the powder. It clumps up and bridges between charges. You go to a different powder that will meter. There are plenty of good powders that can meter well and be in the burn rate of the extruded powder you are trying to use.
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106352
12/28/15 08:28 PM
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RiverRider
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I agree. I use my Charge master for extruded powders with few exceptions like Benchmark and LT-32. Some guys say it can be done, I just don't see how.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106354
12/28/15 08:30 PM
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Joined: Dec 2013
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thecytochromec
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Woodsman
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I'm not sure if this is technical enough, but there are powder tricklers that meter basically to the pellet/flake. The old ones RCBS use to make work well for extruded powders like Reloader 25 but tends to clump on things like H110.
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106381
12/28/15 08:48 PM
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RiverRider
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I have one of those too, but it has nothing to do with making a measure, like a UniFlow, drop consistent charges of something like H4831.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106471
12/28/15 09:35 PM
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ChadTRG42
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He's talking about for a progressive machine. The powder trickler and RCBS chargemaster are for single stage loading.
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106495
12/28/15 09:51 PM
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Buzzsaw
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the Varget was flowing smooth from my ChargeMaster this morning, don't think it over charged but a couple and only by .01 grain.
must be the moisture in the air and I turned off the heater so the fan wouldn't blow me.
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106568
12/28/15 10:39 PM
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Joined: Aug 2009
Posts: 144
D-Day
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Going to try the new Lee Auto-Drum.
Videos on YouTube.com and reviews on other sites. Both MidwayUSA and Grafs are out...back ordered with Midway USA.
The dog is a gentleman, I want to go to his Heaven not man's.--Mark Twain
If dogs don't go to Heaven, then when I die I want to go where they went.--Will Rogers
The more I learn about people, the more I like my dog.--Mark Twain
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106629
12/28/15 11:08 PM
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Buzzsaw
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106792
12/29/15 12:19 AM
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RiverRider
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I am talking strictly about measures like the UniFlo, Lee "Perfect" (hahahaha), Lyman 55, that sort of measure. I know about the Chargemaster, I use one. I am not asking how to trickle up, or what gadgets make that easier (I have those too).
I am asking if anyone knows how to get a UniFlo to drop consistent charges of coarse extruded powders, and by "consistent" I mean +/- 0.05 grain.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6106808
12/29/15 12:27 AM
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Buzzsaw
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you may have to go to a Harrell Culver type measure but benchresters like them but most of those guys like ball powder which meters more precise. My Uni Flow will always "crunch" long extruded powders. I went to the short cut variables re; 4831SC, 7828SSC, it solved most problems.
When I want the most accurate load, I use ChargeMaster or a beam scale and trickle the last few grains.
so to answer your question...no way
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6108197
12/29/15 07:47 PM
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ChadTRG42
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If you find something within .05 grains, PLEASE let me know. That's within 2 kernels of gun powder on a metered powder thrower. If you mean within .5, or half a grain, that's doable.
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6108246
12/29/15 08:28 PM
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RiverRider
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The resolution of common electronic scales is 0.1 grain, so what you see on the display should be within 0.05 but I do realize that would depend on the quality of the strain cell and the electronics.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6108248
12/29/15 08:29 PM
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RiverRider
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Or did you mean the measure itself?
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6108292
12/29/15 09:02 PM
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ChadTRG42
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If a digital scale reads out to .1 grains (which is most common), it will generally have an error factor of +/- .1 grains. Like an RCBS charge master, it reads out to within .1 grains, and is accurate to +/- .1 of a grain. In reality, the scale is accurate to within .2 grains (or more). And most are based on a stain gauge, which will wonder around and have interference.
This is why I have a high end digital scale. It is accurate to within .02 grains, with a +/- of .02 grains, so within .04 grains. So, it's 5 times more accurate/consistent than a .1 grain scale. Plus, it's a magnetic scale, which does not wonder around, and has a much quicker settling time.
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Re: Powder measures and Extruded powders
[Re: ChadTRG42]
#6108350
12/29/15 09:50 PM
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Joined: Dec 2013
Posts: 225
thecytochromec
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If you find something within .05 grains, PLEASE let me know. That's within 2 kernels of gun powder on a metered powder thrower. If you mean within .5, or half a grain, that's doable. Those were my exact thoughts lol. I was like, "So something that measures within ten-thousands of a gram, huh."
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6108351
12/29/15 09:51 PM
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Joined: Jun 2011
Posts: 33,946
Buzzsaw
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6108537
12/29/15 11:24 PM
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ChadTRG42
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6108562
12/29/15 11:37 PM
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Joined: Nov 2007
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RiverRider
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Let's try it again... Who has figured out techniques for metering extruded powders and keeping variations down to a couple of tenths of a grain? It has never worked for me, and I've used five or six different measures.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Powder measures and Extruded powders
[Re: RiverRider]
#6108576
12/29/15 11:44 PM
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Joined: Nov 2007
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RiverRider
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Maybe I'm not being clear enough... the Chargemaster is great, I wouldn't want to be without one. But I read comments about accurately metering coarse extruded powders out of one of these with some frequency, and I'd like to know how it's done.
"Arguing with you always makes me thirsty." -Augustus McRae
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