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Weighing Powder - How precise is good enough?

 
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  #22  
Old 08-08-2011, 04:37 PM
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Re: Weighing Powder - How precise is good enough?

Kevin +/- 0.1gr is +/-10fps from my 6br using 31.6gr IMR4895.
Now 10fps by itself isn't much.
But while I'm trying to find the lowest ES, best shooting load, it would be difficult to accept that much error before even leaving the bench..

I might feel better about that kind of error with a larger cartridge.
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  #23  
Old 08-08-2011, 08:31 PM
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Re: Weighing Powder - How precise is good enough?

Quote:
Originally Posted by SBruce View Post
I feel sorry for the dog!

There's supposedly alot of world class record groups shot with charges that were only metered, never weighed.
Yes that is possible at 100 yards, but absolutely never at 1000!

1k loads are weighed to the 1/10 if not .05 grains or less. If you do not, vertical will eat you alive every time.

Now that might work for "hitting a 3 ft rock" but that will equate to 6-10 inches of excess vertical in a group at 1k. Now many think that is close enough, and if it is for you go for it.

Here is a link on a new electronic scale that seems to be working very well. http://bulletin.accurateshooter.com/...from-my-weigh/

I use a Ohaus Navigator that weighs to the .05 grains

BTW you can search 6mmbr for the guy who will "tune" the beam scales like the 10-10 for $20. Couple guys I know really like his work and say it makes a difference in there use.

BH

Last edited by BountyHunter; 08-08-2011 at 08:38 PM.
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  #24  
Old 08-08-2011, 08:36 PM
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Re: Weighing Powder - How precise is good enough?

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Originally Posted by SBruce View Post
Wouldn't it suprise the heck out of ya if you walked into your bedroom and saw this? Lets just hope that beep doesn't give them an itchy trigger paw too!
Yes it would!!! That's a cool picture!
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  #25  
Old 08-11-2011, 04:01 PM
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Re: Weighing Powder - How precise is good enough?

Quote:
Originally Posted by BlackKnight755 View Post
JD,

I'm not positive on this but I think theres a way to go into the settings of the RCBS chargemaster and turn off the "beep". I remember reading a thread some time back where people were going into the setings and changing all kinds of default settings and setting them to their liking and I want to think that the beep delete was one of the things that was an option. I am sure that a call to RCBS tech help and they would be able to tell you. They are a great bunch out there. I called the other day to order the cap that goes on my old bullet puller and they sent me one the same day for nothing. Have had other issues also that was handled free of charge... 'course like you said, you do have an excuse for an upgrade now, so you may not want the old scale. BK
Based upon Blackknight's advice above, I Googled a bit and found a page that instructs on the method for disabling the beep tone on an RCBS Chargemaster. Turns out all you have to do is hold down the 'zero' button for about 5 seconds and the screen flashes 'beep off'. Simple as that. Between that and the reassuring advice in numerous posts, looks like I am saving my money! (Good thing, too- I'm saving up for a suppressor). Dog and wife are both happy, thanks for a good thread!
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  #26  
Old 08-11-2011, 04:55 PM
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Re: Weighing Powder - How precise is good enough?

Quote:
Originally Posted by SBruce View Post
So Jeff/Broz, how precise do you go on big cases for extreme long range?
Do you use an electronic or beam scale?
Sorry for the slow reply SBruce, I just sumbles back into this thread.

I have both a Lyman 1200 ( that I feel is very accurate and I have used it for years) and a RCBS ChargMaster Combo I recently bought with a bunch of reloading stuff.

I zero Cal. my scales with each use. Plus I always have a bullet that is close to my charge weight that I set in the pan once in a while to quick check. I weigh to the tenth of a grain. That is as close as the scales will go but if it flickers back and forth between numbers I take a few kernal out or add one. I think with H-1000 2 kernals are about 1/10th of a grain and I get them all perfect to the tenth. May not be the best way but it works for me and it makes me feel knowing I left no variation. Just not that hard to be perfect in this area.

Jeff
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