OzFclass

Purchased a set of these from the scale shop dot com dot au last thursday 9/4/15. They arrived in SW WA Monday 13/4 around lunch time. Win.

They were well packed in foam and well sealed up in the box. Win.

Have unpacked, unwrapped everything and put the scales on the loading bench without trouble from the minister of war and finance. Win.

To start with I put them on the bench and levelled them off. Switched the unit on and let it warm up for 30 min. I also left the roller door open on the shed and the flouro lights on to see how much they move about. After 30 min (and having the old RCBS scales warming up for 30 min) the powder pan which weighs 66.6gr on the RCBS scales went on the A&D. 66.60gr. Win. No movement from that figure.

I put some old and tarnished check weights on the scale too. The 20 gram one went 19.996 grams and the 30 gram one went 29.997 grams. Took them off and the scale returned to zero.

Ive left them sit for another 20 or so minutes then will get to loading some ammo on them. Got to size some dasher cases first. Will report the results back as soon as I get the chance.

Righto loaded 18 rounds. I can honestly say that all those rounds (according to those scales) are within 0.02gr of each other. After each load the scales went back to zero and at the end of loading I put the pan back on and they went back to zero. Seems repeatable so far and I havent had to re tare the pan. No drifting from zero to be seen. Will report more as I use them more.

G'day Brad Y,

many thanks for your report. It looks like this scale is a winner.

Encouraged by your experience, I've ordered a EJ-123 scale, which was dispatched today. I'm looking forward to start loading batches of rounds for ladder testing and the Adelaide Queens. Will keep you informed about my experience.

G'day,

here as promised my review of the A&D EJ-123 scale. The scale described here was purchased second hand from Perth.

My first impression about the scale was very positive until I started adjusting its feet. The feet are very loose once they are screwed out only a few turns to level the scale. The scale moved significantly when pushed from the side, which is not ideal when taking measurements in the mg range. I'm planning to remove the scale's feet and manufacture an adjustable pedestal that also accommodates the trickling device.

The scale was left powered on over night, so there was plenty of time for it to warm up before using it for the first time. I initially didn't have a suitable calibration weight, so I used a 20gr weight from the Lyman 1200 DPS to check its calibration. The EJ-123 registered this weight at 19.997g, which is very close considering that the scale wasn't calibrated at this stage. A calibration weight of 100g was purchased on eBay and later used to calibrate the scale.

The old Lyman 1200 DPS is utilised to dispense the bulk of the powder whilst the EJ-123 is used to trickle the load to its final weight. I was pleasantly surprised to note that throwing a single kernel of 2208 powder registered a weight change of about 0.02gr. After becoming organised and with more practise the process of dispensing powder took not much longer than the previous method of using the Lyman 1200 DPS on its own. A few loads randomly sampled from a batch of 50 were measured again and their weight was confirmed to be within 0.02gr. I've since produced 150 rounds using the new scale and I'm very happy with its performance.

I've made the following observations:

Using a 100g calibration weight causes the scale to take some time to return to zero, which is likely to be due to the hysteresis of the strain gauge. This is not much of an issue when dispensing powder for standard loads that weigh only a few grams (e.g. 46gr). In this case the scale quickly returns to zero.

My EJ-123 scale does drift from time to time, but having said this, it holds its zero much longer than the Lyman 1200 DPS. I've managed to load 50 rounds without the need of re-zeroing the scale.

The weight indication is not instant, but much faster than that of a RCBS or Lyman scale. When trickling kernel by kernel, the scale does take a second or two to settle until indicating the final value.

The scale appears to be very accurate and measurements are repeatable IAW manufacturer’s specifications. The results of measuring small batches of loads for a second time seem to confirm this.

I'm happy with the performance of the new scale. It is more accurate than my old Lyman 1200 DPS and the RCBS scale that I had on loan. More importantly, I have confidence in the repeatability of measurements, which to me is more important than absolute accuracy.