Check weights?
- Thread starter TrxR
- Start date
How accurate is your scale? there's many classes of calibration weights, most of the cheap ones will be about a ASTM class 7 or so. I only ever found online places for them if you want something better than what rcbs and such sell for reloading and those that come with some reloading scales, which are actually ok for reloading even if not actually accurate, but I wouldn't set a good lab scale to it... Anyhow, for reloading its more about repeatability than exact accuracy to a standard, part of why although I use a FX120i, I haven't yet bothered to get a class 1 weight for it and never do any "calibration" of it, no need for this application and how this unit works.
This here has some info.
http://balances.com/sartorius/calibration+weights.html
This here has some info.
http://balances.com/sartorius/calibration+weights.html
You no doubt have hundreds of weights on your loading bench right now.............Every now and then I'll weigh 10 bullets or so and just check my 2 electronic scales........I'll weigh some 22 cal bullets, then I'll weigh some in the 200-250 gn class then I'll weigh several in the 400-500 gn class. I have never found my scales to be out, they always match each other +/- .1 grns. Most bullets I have found lately weigh within .3-.4 of their nominal weight...some a little more but most are pretty good. I weighed 10 X 225 Nosler ABs the other night just as a check, everyone fell within 224.7 and 225.1...........so I'd say may scales are good and the bullets are quite consistent.
Purple shoulder
Regular
- Location
- Winnipeg MB
My dad has the lyman check weight set. It works pretty well. The beauty of it is if you are gonna throw a 76.5 grain charge, for example, you put 76.5 grains of weights in the pan and see what it reads. Then you know its accurate at that point, not accurate at 100 grains and then weigh at 76.5. Its overkill for sure but there's nothing wrong precision.
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I bought a set of check-weights on Ebay shipped from China. I wasn't expecting them to be super accurate since they were like $10 +/-shipped. Checked them on a couple digital scales and my RCBS balance scale and they seemed bang on, at least to the accuracy of my scales.
I have similar experience with cheap weights. Bought a 50gr weight off amazon for my scale (that's not used for reloading) and its bang on, at least to the accuracy of the scale (+/- 0.01 grams i think it is? Only does grains in 0.2 increments, that's why it doesnt get used for reloading)
My kit cost around 30$ at the time.
There are even tiny metal pieces weighing down to 0.5grains
Brand is Cabelas, don't know who does it for them but quality looks nice
Tested and passed the test on RCBS chargemaster kit, RCBS 5-0-5 scale, dillon precision electronic scale
I mainly use it to double check my 5-0-5.
Once zeroed and level, i check if reading is still correct with some weight in
It does happen that the beam balance point is stuck, and am 0.1-0.2grains off, scale weight checks confirm this for me
There are even tiny metal pieces weighing down to 0.5grains
Brand is Cabelas, don't know who does it for them but quality looks nice
Tested and passed the test on RCBS chargemaster kit, RCBS 5-0-5 scale, dillon precision electronic scale
I mainly use it to double check my 5-0-5.
Once zeroed and level, i check if reading is still correct with some weight in
It does happen that the beam balance point is stuck, and am 0.1-0.2grains off, scale weight checks confirm this for me
I have a dime sitting on a piece of masking tape on the side of the scales. My dime should weigh 31.1 gr, according the the masking tape label.
If you are concerned about your scales and don't have a check weight, weigh a quality bullet or a dime. That will show up a gross error.
If you are concerned about your scales and don't have a check weight, weigh a quality bullet or a dime. That will show up a gross error.
