Calibration Weights

Easiest way is to bum a few smallbore bullets, a 40, a 52, a 60, maybe a 75.

That will cover you for the range of typical powder charges.
 
rgv said:
Easiest way is to bum a few smallbore bullets, a 40, a 52, a 60, maybe a 75.

That will cover you for the range of typical powder charges.
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One would think so, but look at the long-range competition guys who recommend weighing every single bullet. That suggests at least some variance.

Google 'calibration weights' and you'll find a lot of people selling them.
 
I got mine at my local reloading store.I check the throw weights on my ChargeMaster regularly.RCBS,Lyman and others make sets. Mur
 
Yes, I am looking to refine my loading, I have a scale that measures to 0.02gr, just wanting to make sure the scale is functioning as it should, too much variance in bullets to use them for calibration.
 
ATOM said:
One would think so, but look at the long-range competition guys who recommend weighing every single bullet. That suggests at least some variance.
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You are looking for a quick verification that the scale or balance hasn't gone screwy. It's not a big deal to weigh a few and pull one that measures the exact nominal weight.

99% of my loading falls between 40 and 75 grains. I have a 40 grain hornet bullet, a 52 grain SMK, and a 75 grain JLK (all marked with paint) that I toss on the Chargemaster before starting, midway through, and at the end (whichever one is close to what I'm loading).

If they are 40.1 grains, 51.9, or 75.2 doesn't really matter, though I selected them to be exact weight. But if you want to buy some ISO-9001 certified 40.000 grain check weights, all the better I suppose.
 
Kelly Timoffee said:
Yes, I am looking to refine my loading, I have a scale that measures to 0.02gr, just wanting to make sure the scale is functioning as it should, too much variance in bullets to use them for calibration.
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What scale do you have that measures 0.02 grains? and how do you calibrate it other than zeroing it?
 
Jennings Mack 20 that I just purchased.Also have a charge master right beside it too.

There is a procedure for advanced calibration also. It would just be nice to have a verified specific test weight.

rgv said:
What scale do you have that measures 0.02 grains? and how do you calibrate it other than zeroing it?
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Kelly Timoffee said:
Jennings Mack 20 that I just purchased.Also have a charge master right beside it too.

There is a procedure for advanced calibration also. It would just be nice to have a verified specific test weight.
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wow thats a nice scale. Surprised it didn't come with test wieghts, but I guess they were all metric
 
You are looking for a quick verification that the scale or balance hasn't gone screwy. It's not a big deal to weigh a few and pull one that measures the exact nominal weight.
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He is looking for calibration weights to verify his scale. Until he verifies his scale, how can he verify the exact weight of a bullet?
 
rgv said:
What scale do you have that measures 0.02 grains? and how do you calibrate it other than zeroing it?
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A lot of the digital scales measure to .02 grains. I have a GemPro that does. Some of the longer stick powders weigh .02-.03 grains each so I've learned to ignore that last digit for the most part.

There is a calibration sequence in the instructions that came with mine. And a calibration weight. But the first calibration weight I look at is my powder pan before I hit the Tare button.
 
But the first calibration weight I look at is my powder pan before I hit the Tare button.
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Exactly,my scale came with calibration weights, but I always verify the scale before starting loading by checking the weight of the pan.
 
coins as reference weights

There was a comment on here, perhaps 6 months ago, that you could use Canadian coins as reference weights.
I don't know how much variation they would have........
 
I'm not very happy using substitute items as check weights due to weight variations. The correct check weights are inexpensive and easily obtainable from WSS, Cabela's, Epps, and a host of other places.
 
I bought a set made by Lyman (Also have the Mack 20 scale and I love it).

The weights are in grains, I believe there are 50, 25, 10 & 5 gr weights.

I got them at Lebaron, you should be able to get them online from Midsouth or Sinclair
 
mmilne said:
I bought a set made by Lyman (Also have the Mack 20 scale and I love it).

The weights are in grains, I believe there are 50, 25, 10 & 5 gr weights.

I got them at Lebaron, you should be able to get them online from Midsouth or Sinclair
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The Lyman set consists of:
1-100 gr
1-50 gr
2-20 gr
1 10 gr
1-5 gr
2-2 gr
1-1 gr
1-.5 gr
 
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