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BobKingsbury
Reply with quote  #9 
My Acculab is as worthless as yours,Just sits there and floats
not .01, but .2. my rcbs 10-10 is way better than that.
I have a small pocket size purchased from Lester Bruno,that
will scare you for accuracy.
calmaxus
Reply with quote  #10 
I actually returned a $150 Pact scale and paid $255 for a MXX-123 after reading the "review" on 6mmbr.com. I am now thinking that I may have been a sucker for marketing hype, considering that DI is their sponsor and the "reviewer" is selling the scale. The first one I received insisted "OL" after only a few loads. A call to DI and was told that it had to be replaced. DI's customer service was very nice and responsive. They didn't give me any fuss and sent out the replacement the same day. They even emailed me a prepaid return label. My second unit was drifting like the others said. I put the included 100g (1543.24gn)check weight on the scale and it started to drift up right after a few seconds. It could drift up to 0.06 in a minute, or 0.4 grains overnight. It wouldn't return to zero after it drifted up. It would retain the drifted difference after the load have been removed. It also wouldn't retain calibration with the included check weight either. I calibrated it with the check weight reading 1543.24 grains, removed and put the weight right back and it would read 1543.18. The under-read was pretty consistent though. It would show the same under for each reweigh; of course unless I left the load on, then it would drift up again. I had repeated calibration numerous times but got the same result each time. I think it is easy to make a scale reading down to 1/100th of a grain, but it would take a lot more to make the 1/100th usable. I think that is why other manufacturers chose to show only down to 1/10th of a grain. This 1/100th grain thing on MXX-123 is nothing but a gimmick. It is just there to "justify" fetching double the price of compatible products. I can though understand DI using such gimmick to sell a overpriced product. After all, they are in business for profit, and people like me bought it. I can also understand why 6mmbr played along with them and push it; because they paid! My advise to DI is: if you have to price a product $2000 to deliver supposed function, do it than you won't see a post like this one; to 6mmbr, you can "review" just so many times before you lose all your credibilities. Don't over do it unless you change the site name soon; to fallow readers, don't pay $100 more for something with good "review". Check it out for yourself and you may only find it $10 better, or $100 sucker.
308shooter
Reply with quote  #11 
I also have an Acculab VIC-123, when I recieved the scale I accually thought it was defective because it drifted so much. I called Acculab and sent it to them after a couple of days I recieved a call from acculab stating the scale checked out OK and it was sent back to me. Scale still drifts anywhere from .04-10gns yea, thats right 10gns. Not worth the money in my opinion. I cannot speak for the DI scale as I have never used one.
Kabang
Reply with quote  #12 
I received my MXx123 a month or so ago and had the same/similar drifting problems. I called Denver and the engineer told me the scale had an auto zeroing routine built in. So I developed a different procedure that is working out and meeting my expectation.

1) Warm up for at least one hour in a closed off room with no heat, no extra desk lamps on, just overhead lights that are not fluorescent. Recalibrate if you have moved the unit and just before you begin to use the scale.

2) Zero the scale and immediately weigh your pan and write the value down.

3) Now place 4 or 5 grains of powder in the pan, zero the scale, and weigh. Use the difference to find an average /kernel weight.

4) Add the charge value you want to what the pan weighed.

5) Throw a charge, place it in the pan, zero the scale, and place the pan and charge on the scale. Take the value when the balance symbol appears. The longer you wait to acknowledge a value, the more likely you are to be accepting a drifted value.

About 30% of the time, the preliminary charge reads exactly what I want. 50% of the time, the value is within 1 or 2 kernels of that weight. The other 20% is a bit farther off.

6) Take the charge off the scale and if it weighed less than your goal, pour the contents into the shell case. Then take a hand trickler and measure out the number of kernels the charge was lite and pour them into the case to meet your goal. I trickle these few kernels onto a small piece of neon note paper I've folded in half and then in half perpendicular. This make me a lite duty pan for dumping them into the funnel.

7) If the charge runs over, then take some out and have the dispenser re-trickle the charge or after removing some kernels you should be lower and can hand trickle them in after the preliminary weight is known.

I use an RCBS dispenser and after pouring the lite charge in the shell case from the pan, the pan goes back on the RCBS and starts dispensing another preliminary charge while I'm topping off the lite charge.

The advantages for me in this procedure is Time savings as I'm not trying to re-weigh a topped off charge on the scale and multiple things are happening at the same time. By using a pan + charge scale reading, I can zero the scale just before weighing the combined pan + charge. This renders the drifting problem/characteristic mostly irrelevant.
JRS
Reply with quote  #13 
I too have an Acculab VIC-123 and have had no problems whatsoever with drifting nor accuracy problems.

I also use my 18 year old Dillon Terminator which is always dead on.
Moderator
Reply with quote  #14 
CalMaxus,

Yes, Denver Instrument has been an advertiser in the past, though it is not currently. We provided test results from three units actually purchased (with their own monies) by three Forum members, Jerry Tierney, James Phillips, and Danny Reever. James was selling this product at one time (but he has subsequently closed his business). Jerry and Danny have no financial interest whatsoever, and neither they, nor James, received any financial compensation for the test.

FWIW, we published test results before Denver Instrument placed an advertisement. There was absolutely NO plan to "cook" the results to favor the device. If you know James, Jerry and Danny you'll realize they gave it their best efforts, and were truly independent and unbiased.

I run this site and I don't sell scales, or products of any kind for that matter. We did the test to find out if the MXX-123 worked well, period. No one "sponsored" or underwrote the testing.

Proper Placement and Leveling is Critical
I can say this much. Just last night I spent an hour working with an Acculab 123 scale. Its owner said it wasn't working. First, he had it on a plastic folding table that was bowed in the middle. It was impossible to level it on that surface. Second, the scale was directly in line with a large air fan. Third, the device was placed immediately next to a computer network wireless router and other electrical devices.

When we moved the scale, placed it on a slab of granite on a flat bench surface, isolated it from breezes and electrical interference, carefully leveled it front to rear and side to side, and then calibrated it -- guess what, the scale worked perfectly. Waving your hand quickly over the pan could cause an air current that would cause the hundredths of a grain units to "flicker". But if you did not induce a breeze, it was stable and repeatable.

And this was a unit the owner had decided was "junk".

All manufacturers will produce a bad product now and then. That goes for the DI MXX-123 and its clone Acculab unit. But I will say this--I think many of the problems some folks have observed can be traced to poor leveling and improper placement.

I'm sorry you had a bad experience with your scale. But I can assure you that the tests written up for this site at http://www.6mmbr.com/mxx123test.html , were not influenced one way or the other by Denver Instrument. As noted, we provided test results done with three different scales, by three different testers. The data presented speaks for itself--the numbers are what they are.

It is worth noting that James specifically included "long-term" tests to see if there was drift after 2 hours, 4 hours, and 24 hours. If James was trying to present only the most favorable data, he never would have taken the time to check for drift over extended time intervals.



Jerry also very candidly reported his observations of some zero drift: "Report from Jerry Tierney:
First, let me make some general observations about the MXX-123. There were several tenths of zero drift in the first hours of “burn in”--12 hours of "power-on" time before I calibrated and started measuring. I observed very small zero drifts while measuring--about 0.06 grains--but that doesn't seem to affect the reading by that much. I have NOT seen any effects on measurement caused by lights, telephones or ambient temperatures (50 to 75 degrees). Now on to the tests..."

rhino
Reply with quote  #15 
Warm up a few hours and throw the unit on a line sensor.

RHINOUT!
hulk
Reply with quote  #16 
I do not have this scale but the one I use MUST have a line conditioner/AVR to work properly. Do it right or do it twice.
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