Don't you just hate that no forum dictionary seems think Metrology is correctly spelled?
Which Scale Check Weights?
- Thread starter AROKHUNTER
- Start date
The original post was in January. I made my standard for free out of stainless steel. All I want to use it for is to adjust my zero on the beam. It's a piece of metal and it's weight doesn't change. I weighed it at work to at least 4 decimals. Repeatability not accuracy. If it's an electronic scale the same deal does it weigh what it's supposed to be?
CharlieNC
Gold $$ Contributor
Us rednecks have a more universal term too.
I bet it doesn't utilize any Common Core math skills either 
Kind of funny how things that sound hard sometimes get answered in a post or too, but some simple-sounding topics like this thread about a hunk of metal just keep chugging along.
What is the best check weight if you’re loading for a 6.5 Creedmoor?
What is the best check weight if you’re loading for a 6.5 Creedmoor?
Infrequent Shooter
Gold $$ Contributor
I would like to buy some various weights from you.
Infrequent Shooter
Gold $$ Contributor
A very entertaining (and a little old) thread.
Over a decade ago, for a brief time I was able to borrow a milligram scale of decent quality. While I had it I weighed a number of coins of different denominations and put them and a list of their weights in an envelope in the drawer where I keep my 10-10 scale. At the time, I checked the weights on my scale and they were very close, well within my need for precision. As a practical matter,I do not need to weigh powder to the granule and I generally use one scale for all loading. As long as it gives the same result for multiple weighings of the same thing, and that weight very close to correct, I am good to go.
Renewed interest in this old thread has peaked my interest again
My current good scale is a A&D EJ-54D2. I use it in gram mode as my cal/check weights are in grams.
The math isn't that hard.
On the low range 20grams or so the software allows you to perform the calibration at any 'Full scale' value.
I use 10 grams as that covers my bullets, cases, powder and primer. I check at 1 and 2 grams.
My check weights are pretty good, ASTM Class 1, which is better than needed by a long shot.
The scale (on the low range) counts by 0.0002 grams, and typically will repeat to 0.0004 grams (2 counts).
Again, better than needed. I take extreme care in setting it level (to the built in spot level). Re calibration (@ 10 grams) is seldom needed, just a warm up, zero and go. Since I don't have a temperature controlled lab zero can be an issue. Instead of using the software Auto-Zero (turned off in software) I do have to rezero/tare every so often likely due to slight temperature changes in the room.
I sure this thread will pop up from time to time over the next few years
My current good scale is a A&D EJ-54D2. I use it in gram mode as my cal/check weights are in grams.
The math isn't that hard.
On the low range 20grams or so the software allows you to perform the calibration at any 'Full scale' value.
I use 10 grams as that covers my bullets, cases, powder and primer. I check at 1 and 2 grams.
My check weights are pretty good, ASTM Class 1, which is better than needed by a long shot.
The scale (on the low range) counts by 0.0002 grams, and typically will repeat to 0.0004 grams (2 counts).
Again, better than needed. I take extreme care in setting it level (to the built in spot level). Re calibration (@ 10 grams) is seldom needed, just a warm up, zero and go. Since I don't have a temperature controlled lab zero can be an issue. Instead of using the software Auto-Zero (turned off in software) I do have to rezero/tare every so often likely due to slight temperature changes in the room.
I sure this thread will pop up from time to time over the next few years
Ahh Jim, the old scale in the picture would more properly be called a balance, it doesn't weigh anything. You need to zero it using a known mass. This particular one was made by Pacific, and at a total guess, probably dates from the 1950's. It's not damped in any way and just so simple there's very little to go wrong.
The balance was supplied with a set of grain checkweights, including some little 10th gn weights.
I also have another of this type, also Pacific, oil damped, I would guess of a slightly later date.
Been using the same 40 Gr VMAX for 14 years.
6MMsteve
Gold $$ Contributor
I use a bullet, A 150gr SMK I chk my scale for zero and 150grs but I use beam scales, that I tuned myself under the shadetree, I done the work in the Lab at work, where I use to work it has some very accurate equipment, scales, Zeiss CMM, blah blah 23 computers, and quiet room where there is no dust, temp is controlled no vibrations blah blah, lab coats, nice surface plates, tools, Renshaw equip
36 grain Starke FB
Infrequent Shooter
Gold $$ Contributor
still very good reading/
lgwatson
Silver $$ Contributor
Apparently you didn't read and absorb what Varget said. He said keep the same bullet with the scale to check it.
I use ASTM Class 1 and 2 weights.
Getting ready to do some sorting (3.700 grains).
Check weights 200mg, 30mg, and 10mg.
Using gram mode, low range on my EJ-54D2 gives me 0.0002g resolution (0.00309grains).
0.2398g +/- a count should do it.
I'll use my A&D ER-182A to spot check results.
Getting ready to do some sorting (3.700 grains).
Check weights 200mg, 30mg, and 10mg.
Using gram mode, low range on my EJ-54D2 gives me 0.0002g resolution (0.00309grains).
0.2398g +/- a count should do it.
I'll use my A&D ER-182A to spot check results.
Last edited:
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