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Posted: 3/1/2010 11:07:16 AM EDT
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Okay....this is one of those "do it once and it's easy". But the instructions may as well be in Chinese and I'm Irish/German.
I searched YouTube hoping someone took up the task of showing how it is assembled properly, but no luck. I contacted Midway (where I bought it) but they pointed me to RCBS. I don't see any video there or more specific instructions. Would anyone know of any "better" instructions online before I call and try to be talked through it by RCBS? There are two measuring cylinders (handgun/rifle) that need to be changed when the drop amount elevates to rifle loads. RCBS Instructions |
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Not much to it. Unscrew the mesuring screw/piston and slide the cylinder out the side. You do not have to disassemble the mic, remove it as a whole.
Depending on the powder volume, use the small cylinder if possible for rifle also. You will get better consistancy on the loads. |
| I have a Redding powder dispenser that is the same as your RCBS. Assuming that your measuring assembly & measuring screw have two different diameters, as my RCBS does, you decide if you want to measure the smaller or the larger volumes of powder & use he appropriate parts. Use the smaller diameter for the lower weights of powder or use the larger diameter parts for larger weights of powder. The smaller is typically for lower weight charges, like pistol & small capacity rifle cases & the large is for larger rifle cases. It is obvious as to how to disassemble & reassemble the parts from the diagram. Let us know how you do on that project. |
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I didn't drop the powder but I think I have solved it. The instruction sheet of the micrometer adjustment had fallen into the box the Rock Chucker was shipped in. So I was reading only the Uniflow Powder Measure instructions.
So it looks like I have two almost identical micrometers with the difference being each drum's hole and the head of the bolt. I'm guessing that the larger bolt drops drops further, and has a larger opening, into the cylinder to rotate around and allow larger powder amounts to fall. Still, one more graphic on this would have not had me having to figure it out. But then again, if I can't realize that, maybe I shouldn't be reloading... 
I had to read this twice: "Each shim provides a 90 degree rotation of the body". This would have made more sense, to me: "The threads of the body come with three washers covering them. When screwing the body into the measuring cylinder, lining up the index to your visual liking can be achieved in 90 degree increments by varying the number of rings used." I'll report back after I drop some powder in a day or two. Thanks guys, Walsh EDIT: I have only one Hand Assembly. Wouldn't you think for around $150 I shouldn't need to change handles? Was I stiffed by accident or is that "quality control" to reduce costs. I'll call and ask for a 2nd one. If anybody reading this got two in the box with the Competition Measure for both Handgun and Rifle please let me know. It's kind of ridiculous that you need to change this each time for what can't be 25 cents in product. |
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I just threw 100 charges for my .45 using 4.3 of Clays.
Here's what I see so far: 1 - measuring every 7-8 charges were found to be 4.2 to 4.4 with most being 4.3, as desired. My RCBS electronic scale does not go into 1/100th so they could be closer. 2 - I don't see how the scoring on the thimble and body mean all that much for precision setup and caution is advised. Perhaps I'm not using it with 100% efficiency in the setup, but I believe one needs to lock the setting down AFTER confirming what is being consistently thrown by placing on a scale. Am I right on point #2? The thimble is graded from 0-50. Rotating it entirely (50/50ths) lifted the charge to 5.6-5.7, or about 1.3 grains. Is the numbered scale and its exact effect on powder dependent upon the type of powder, and the primary usage for the scaling is to be able to work one's loads and not expected to be a calibration measure to be trusted for a throw into a cartridge without checking? For example, I was hoping that one complete revolution would increase the throw by 1 grain, and as you can see it did not. Thanks in advance, Walsh |
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The numbers are for reference only.
One turn does not add 1 grain to the charge. You write down the number , powder type and charge. Next time you want to load that charge, adjust measure to the "number". It will be close, but will need to be checked and verified. 
Couple of pages from my Sierra reloading manual. Look at the far right of either page, see the number? That's the number from the powder measure. |
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Quoted:
The numbers are for reference only. One turn does not add 1 grain to the charge. You write down the number , powder type and charge. Next time you want to load that charge, adjust measure to the "number". It will be close, but will need to be checked and verified. http://i250.photobucket.com/albums/gg272/dryflash3/P8130277.jpg Couple of pages from my Sierra reloading manual. Look at the far right of either page, see the number? That's the number from the powder measure. Thanks for the tip, Walsh |
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