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kaferhaus
Reply with quote  #9 
Quote:
Originally Posted by Moderator


We appreciate everyone's input. And it's good to know that the Lyman may perform better for the seasoned owner than our testers. But for us, time to remove powder is pretty important, because we never leave powder in a machine after a loading session.


I never leave it in the dispenser overnight either... even though as long as it were marked I could see no problem with doing so.

You only need to be dumping the thing with any regularity if you're testing a bunch of different powders. Most folks find a powder that works and go from there...

I, however frequently load for many different cartridges, some of which don't like VV 135 which I use most... I still haven't found it to be much of a chore to change them out.

With the RCBS unit being made in the PRC you'd think it'd be less expensive...

But like barrels, dies and bullets, everyone will have their own preferences.

I just think the Lyman got the short shrift on the testing, perhaps if the machines had been tested for a longer period of time and allowed the users to become better aquainted and experiened with each machine and it's capabilities the 3 machines may have been rated a bit closer.

The extra memory is a BIG plus for me as I do load for so many cartridges... easy to just punch up your load and go....

Moderator
Reply with quote  #10 
Re memory--The PACT has no load memory storage. The lastest version of the Lyman can hold 100 load in memory, while the RCBS holds 30 charges in memory.

What we'd REALLY like to see is a button that could be pushed to increase charge weight by 0.2 or 0.3 grains--now THAT would be really useful in LOAD development. I doubt the lawyers will ever let them add such a feature. It would be too easy for careless folks to run an overcharge.

In the future we'll try to do more speed testing on powders that are more popular for 6BR shooters--N135, N150, Varget, RL15--using charges around 30.0 grains. We'll also try running a ball powder, H380, through the RCBS and PACT.

- - -
3/21/05
I just put up a companion page, written by Brand Cole, the guy who builds the Prometheus measure.

Link: http://www.6mmbr.com/prometheus.html

If you want to know how accurate a balance-beam scale really is, read the article. It uses Six-Sigma analysis to achieve highly refined ES and SD.

For those curious about the kind of time the Digital Dispenser test involved--I know I'm approaching the 35 man-hour mark with this latest addition and I know Froggy put in a number of full DAYS.
Changeling
Reply with quote  #11 
Well this was a very informative review if you want an automatic scale.
However, I currently own and have been using a "Hornady" beam scale "agate pivot" that is probably 20 years old. It has worked well for me but now you guys have me wondering! !!!!
I do not want an electronic scale!! I feel my scale is accurate, but really slow! It is a finicky, slow, very slow scale! I would like to have something that is faster in a "Beam" scale, with "Great" accuracy!
So, where does that put me, what is available (with price)?
Change
Moderator
Reply with quote  #12 
Changeling,

Denver Instruments has some .001 gram TR-203 scales they are discounting as this model will be discontinued. Stabilization time is 3 seconds. The .001 gram accuracy will allow you to accurately load to half-kernals of Varget, about .02 GRAIN.

Price, for 6BR.com users will be about $700--that's $400 off retail. Let me know if you're interested. This is a great scale. Anything significantly better will run closer to $950.

FYI, it is an electronic unit. Basically ALL the current lab-quality scientific scales are electronic now.
Asa_Yam
Reply with quote  #13 
Quote:
Originally Posted by Moderator
Denver Instruments has some .001 gram TR-203 scales they are discounting as this model will be discontinued. Stabilization time is 3 seconds. The .001 gram accuracy will allow you to accurately load to half-kernals of Varget, about .02 GRAIN.

Price, for 6BR.com users will be about $700--that's $400 off retail. Let me know if you're interested. This is a great scale. Anything significantly better will run closer to $950.

The Denver Instruments unit is inferior to the A&D GF series of analytical balances. The 210 gram unit (GF-200, about 3200 grains) stabilizes in under a second, the measurement element is self-correcting for changes in temperature, well shielded against RF interference, and resolution is .02 grains. Measurement units are selectable (mine has been set to turn on in grains mode). Current price is $765, this varies with the exchange rate. Go to http://www.balances.com for more details.

Balances.com also carries the Tanita 1210-50 and 1210-100 and My-Weigh Gem Pro 50 scales. .05 Grain resolution, with a capacity of 155, 308, and 155 grains respectively. Battery powered, with a settle time in the 3 second range. These units are pocket sized, and prices are under $220.

Food for thought.
Moderator
Reply with quote  #14 
Asa,

Thanks for the further recommendation. We're not trying to push anything. We just heard about the Denver Ins. sale from another board member who was happy with his TR203. If there's something better out there for the price, by all means go for it.

I'd actually visited the balances.com site but there is such a wide variety of scales listed, it was hard to determine what was a good value or not. Many of the better .001 gram scales are significantly higher in price than the A&D unit.
Asa_Yam
Reply with quote  #15 
Quote:
Originally Posted by Moderator
I'd actually visited the balances.com site but there is such a wide variety of scales listed, it was hard to determine what was a good value or not. Many of the better .001 gram scales are significantly higher in price than the A&D unit.

The beauty of the balances.com website (aside from prices - they're usually a bit lower than the competition) is that if you click on the link bringing up the unit of interest, not only do you get a detailed spec sheet, but comparable units are displayed off to one side as well. Makes it really easy to compare the various products side by side without buying an example of each.

Another thing I liked about the company: they also talked me out of buying a GX-200 (several hundred more than the GF), as it didn't meet my needs.
Travelor
Reply with quote  #16 
I'm on my second RCBS ChargeMaster as the first would throw a charge and indicate the desired weight, BUT the weight was not correct in all cases. It would usually be +.1 to +.2 grains with occasional +.3 grain error. The RCBS customer service was great and sent a second out with a free return ticket for the first.

BUT, the second is no better than the first. After doing a test run of 100 charges it is running about 50% in error with the same +.1 to +.2 grain with occasional +.3 grain error after throwing the charge and indicating that the charge was the desired weight+/- nothing. I think this is called a failure to maintain zero.

What is interesting though is that after removing the pan with the thrown powder charge and returning it to the scale, it will show the load at the correct weight (i.e. the +.1 to +.3 grains over the desired weight). I have tried turning it on 30 minutes ahead of use, closing the plastic door, etc, with no apparent effect of increased accuracy.

Haven't called RCBS back yet as I am afraid they will want to refund my money and what I want is a Chargemaster that is accurate. [I]This thing is really addictive to watch work - but don't need it to throw erroneous loads.[/B]

Anyone else had this problem and know of a fix?

George Toney
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