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The Handloaders Bench > Metallic cartridge reloading > The tools of the trade > Micrometer screws for the RCBS Uniflow.

Micrometer screws for the RCBS Uniflow.
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 Posted: Sun Mar 13th, 2005 02:55 PM
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Timberghozt
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Do any of you guys use these?How accurate are you able to throw a charge cinsistantly versus the standard screw setup?Info appreciated..Gene



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 Posted: Sun Mar 13th, 2005 09:31 PM
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billt
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My Redding has a micrometer screw. It has a chart that will get you "in the ballpark" so to speak. I then just dial in by trial and error. The micrometer does allow for some very fine adjustments, especially with Ball Powder. My Lyman 55 has 2 sliding graduated plates that are attached to a cylinder that moves in and out. It's a bit more of a pain to set up than the Redding. Both will throw very accurate charges, + - 1/10th of a grain.  billt



 Posted: Sat Mar 19th, 2005 02:51 PM
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Gunrunner
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I bought the micrometer for my Uniflow and have been real happy with it.  I think they still make two sizes, large cylinder and small cylinder.  I got the small, as it works great for cartridges up to at least 308.  (I think the larger one is for cases 30-06 and up.)   Like Billt said, you can get real close to your charge weight, and then dial it in.  It's been a lot better than the knob that came with the measure. 

I'll give it two thumbs up.  :thumbs: :thumbs:



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 Posted: Sat Mar 19th, 2005 03:08 PM
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Timberghozt
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Thanks fellas.I have the large cylinder for mine which is up to 110 grains I think.:confused:

I dont need that much capacity really.The heaviest charge I use is 75.5 grains of stick powder in the 300 mag..:wink:

I should buy the small cylinder.I have heard that it works much better on the small capacity cases .ie.223 Rem and such than trying to use the large cylinder.

I cant get it dialed in really close.About a 1/2 grain and I trickle the last 1/2 grain...

Gene



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 Posted: Sun Mar 20th, 2005 02:59 PM
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Timber, that's why I bought the small cylinder.  Since I mostly load lots of 223 and 308 cases the small one made sense.    With powders like Varget I can't get exact weights either, but ball powders come out right on the money.   With Varget, I check each load on the scale, sometimes it's correct, but many times I have to add or remove a little. 

I've had trouble when trying to dump around 58gs of H4831SC  for my 270.  I think there's just to much powder in that thin space, and it gets clogged up when I dump it.   Since I don't load that many large cases I just use those Lee scoop measures, the little yellow spoon things.  (Yeah, that's talkin' technical)   I scoop some powder onto my scales tray,  and can get very close to my target weight, then trickle the last bit on.  (The clogging might be caused by having the small drop tube on the measure. I have to find where I put the large one and give it a try.)



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 Posted: Thu Apr 7th, 2005 07:34 PM
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bea175
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I just replaced the standard powder stem om my Hornady Lock&Load powder measure with the  micrometer stem . I believe this will save time and guess work when changing powder charges. The standard stem was slow and nothing but guess work, to even get close to the intended charge weight.:cool:



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 Posted: Thu Apr 7th, 2005 10:18 PM
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Timberghozt
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Hey bea,I am gonna get the micrometer screws for my RCBS.With stick powder its not that accurate every charge.Its better than weighing every charge out by hand and a dipper,but I still weigh every charge in the pan anyway befor it goes in a case...:wink:



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 Posted: Fri Apr 8th, 2005 12:57 AM
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bea175
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I weight every rifle charge and every tenth load when loading for pistols. :thumbs:



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