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Joined: Jun 2011
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i have a Hornady auto scale, it comes with a 10-gram (154.332) grain weight for calibrating the scale. here is where it gets interesting and scary at the same time. i have a Lyman balance beam scale i have had for years. when you zero the Lyman and set it for 154 grains and place the 10-gram weight on it the weight does not weigh 154.0 grains it weighs 154.7. either the 10-gram weight is wrong ad if it is so my Lyman 10-gram weight is off the same amount or the marks on the balance beam scale are off.
normally i wouldn't worry about .7 of a grain except i shoot a lot of small high intensity rounds. in some of these cases .7 will blow a primer. i'm not sure but i thing the powder charges are .7 less than they really are.

you wisdom and thoughts please.

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If it consistently checks at the same weight, I do t see a problem. Your test weight is 154.337 and the scale shows 154.7 grains.
Consistent readings are what counts.

Last edited by WStrayer; 02/07/24.
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Ask around.... Find someone who has a reloading scale/balance they are confident in and weigh your calibration weight on theirs. Just to compare.

My experience with chemistry lab scales and reloading beam scales and digital scales was that sometimes the calibration weights were not all created equal.

I have an RCBS beam balance and a Hornady digital scale that i use for reloading. I made some check weights to use to check the digital. The check weights and the calibration weights compare closely with either device.

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Very interesting Subject.

Can always use a coin to check balance...

Grab a coin, look up info on the coin, year, date Weight, etc... for that coin. I have check the weight on a few on a digital scale and compare on the balance beam.

Last edited by marzoom; 02/11/24.

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So...I just check My scale using coins cause just got back into reloading and never did check my scale, bought used.
Did all internet thing, punch in whatever coin, Coin Value, there you will find specs for that coin.
Now threw that coin on a digital scale, get a slightly different reading, minuscule, use that coin on Beam scale and same reading. Dead on. That is good enough for me.

Last edited by marzoom; 02/11/24.

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Since you work up your loads, it really doesn't matter whether your scale reads 'dead on balls accurate' or not...

What matters is that it gives you the same 'reading' every time for a given weight....

I have three scales and they give three different readings for the same weight......

If you want more to worry about try this...

Throw a load, trickle into the pan to get it within a gnats azz of your desired charge weight, put it in a case, return the scale pan to the scale, then pour the powder back out of the case into the pan ........ does it weigh the same????? My guess... some will some will not!!


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Originally Posted by Muffin
Since you work up your loads, it really doesn't matter whether your scale reads 'dead on balls accurate' or not...

What matters is that it gives you the same 'reading' every time for a given weight....

I have three scales and they give three different readings for the same weight......

If you want more to worry about try this...

Throw a load, trickle into the pan to get it within a gnats azz of your desired charge weight, put it in a case, return the scale pan to the scale, then pour the powder back out of the case into the pan ........ does it weigh the same????? My guess... some will some will not!!


my experience is they almost always weigh less

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I tried two generations of RCBS electronic scales and didn't like the accuracy drift and need to check and calibrate. I use and Ohaus 10-10, best scale out there never failed to produce consistant readings.

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I normally use a Pacific Balance beam scale that has been my go to scale for over 40 years. I use a Hornady electronic scale to weigh .22 match ammo , but its so sensitive , you cannot run a ceiling fan and weigh cartridges. I have several weight standards for my Gold scales that I test with, and so far they are right on the money for me.
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Originally Posted by gunswizard
I tried two generations of RCBS electronic scales and didn't like the accuracy drift and need to check and calibrate. I use and Ohaus 10-10, best scale out there never failed to produce consistant readings.

+1 on the 10-10


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