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Rcbs charge master ???????????

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Old 05-14-2013, 04:58 PM
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Re: Rcbs charge master ???????????

So, which way do we adjust the potentiometer to increase speed? Clockwise or counter?
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Old 05-14-2013, 05:20 PM
RTK RTK is offline
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Re: Rcbs charge master ???????????

You can actually adjust the speed of each step through the menu.

Mike, does adjusting the pot adjust the speed of all phases??
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Old 05-15-2013, 11:36 AM
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Re: Rcbs charge master ???????????

Originally Posted by D.ID View Post
Our hornady does the same thing with stick powders like h1000. If you slow down the speed it usually helps. I usually just set it one tenth under target load and then top it off with the old spoon tap trickling method when necessary.

Not neccessary, call Hornaday and they will give you supplemental instructions of both the trickle time in which the scale starts to trickle and also adjusting the trickle speed. Problem solved. Not sure why they didn't include it in the original instructions but im guessing its a $ thing.
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Old 05-15-2013, 11:56 AM
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Re: Rcbs charge master ???????????

Originally Posted by Mikecr View Post
Programming helps, straw helps, disturb pan for re-measure.
I found the best fix in an analog potentiometer adjustment for speed:
How does slowing the process help Mike?
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Old 05-15-2013, 12:17 PM
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Re: Rcbs charge master ???????????

One more helper that I find reduces over charges.
Not my idea (or my picture), but it works!
The fine inner teeth are what does the work letting one granule at a time fall.
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Old 05-15-2013, 05:52 PM
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Re: Rcbs charge master ???????????

I was an early adopter of CM.
From the git-go I went through some pretty extensive testing/tuning with it, including programming, straws, a preload on the scale(to bring it to a mechanical mid weight for linearity), a center rod down the tube, and analog speed adjustment. I compared all charges using an Acculab scale(considerably higher resolution).
All of it helped & worked well really.

The potentiometer gives me the ability to fine tune speed, on the fly, for different powders. It's way easier than developing different program settings for each powder by trial & error. I reach up & adjust until the trickle speed jogs to just drop single kernels.
The adjustment is very subtle to overall speed in that it doesn't appear to affect the first 2 speeds at all. It is barely noticable with the third slowest speed, but directly influencing jogs/bumps.

I have an arrow around that adjustment hole now toward F/S in speed. 'F' is counter clockwise with that pot. Just something I dug out of a drawer in the garage(10-turn, 10ohm).
After so much effort in validating charges and playing with it, I got to where I could nail desired within 1-2 kernels consistently. Once there I got rid of the Acculab(accurate as hell, and terrible for reloading). There is a lot more to a good reloading scale than pure accuracy.. And there is a lot more to charging than measuring weight with a scale.
I could not imagine dispensing charges without a CM now, and would never again.
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Old 05-16-2013, 01:37 AM
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Re: Rcbs charge master ???????????

That totally makes sense Mike!
I had an early one as well...promptly sold it!

After that painful experience it took a lot of convincing to get me to come back, but here I am..no regrets I might add.
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