Mr_Flintstone
Member
Can anyone give me the case capacities (gr. H2O) of .32 acp and .380 acp? Thanks in advance if you can.
Need some info I don’t have.
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troy fairweather
Member
My book says. 6.47 for the 32acp
8.94 for the 380.
8.94 for the 380.
ArchAngelCD
Member.
In reality different cases will hold different amounts of h2o.
AZAndy
Member
Great, now I'm not going to be able to sleep tonight wondering what kind of Rube-Goldbergian project Mr_Flintstone is up to. Automatic watering system for a really small creature or plant? The mind reels.
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Mr_Flintstone
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No Rube-Goldberg. My Lyman Pocket Touch electronic scale has been giving strange readings, and I was trying to measure some “constants”. It measured the same .32 case from 6.0 to 8.5 gr water on several measurements without changing the water. Either something is wrong with the scale, or the batteries are about dead. Hopefully it’s the batteries. I’ll try to change them tomorrow and try again.
troy fairweather
Member
A fan or ac and noise can make them go crazy, even a storm front can have some effect.
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Jesse Heywood
Member
As well as air rushing in through the floorboards!
AZAndy
Member
Whew, that's a relief. Clever of you to think of checking it that way. I have some spare check weights and will send you one if you like.
Troy Fairweather makes a good point above-- I've had mine get wacky when I'd forgotten there was a fan running in the next room.
rfwobbly
Member
My son loaned me his Lyman electronic. It was not-repeatable right out of the box.
• The only way to really check accuracy and repeatability is with a set of multiple check weights over a wide range.
• The things that make digital scales go 'wacky' is a long list of all the the things you cannot see and therefore cannot easily detect / defeat:
Low power, varying/ inconsistent power, electrical spikes, drafts, temperature changes, "sticksion"/ friction, magnetic fields, software issues, stretching of the load membrane.... and on-and-on like that.
Everything is fine and dandy, until a digital screws up. Now you need to get a new scale, then go back to your last loads and do some spot testing on your powder weights. Especially if you use "really fast" powders that might be double-charged.
Good luck.
• The only way to really check accuracy and repeatability is with a set of multiple check weights over a wide range.
• The things that make digital scales go 'wacky' is a long list of all the the things you cannot see and therefore cannot easily detect / defeat:
Low power, varying/ inconsistent power, electrical spikes, drafts, temperature changes, "sticksion"/ friction, magnetic fields, software issues, stretching of the load membrane.... and on-and-on like that.
Everything is fine and dandy, until a digital screws up. Now you need to get a new scale, then go back to your last loads and do some spot testing on your powder weights. Especially if you use "really fast" powders that might be double-charged.
Good luck.
Hooda Thunkit
Member
^^^^^ Which is why I use an electronic scale only for weight sorting cases.
For powder charges I use a beam scale.
For powder charges I use a beam scale.
AZAndy
Member
Not to mention gamma-ray bursts, though you've got more problems than just the scale when that happens.
Your mention of stiction took me back to the early days of spinning hard drives; that used to be enough of an issue that people were told not to turn off their computers. Well, that and chip creep.
tightgroup tiger
Member
I found out the hard way with my electronic scales that if I'm streaming music to a bluetooth speaker, of if I'm talking on my phone, my scale will start giving me weird readings so I turn my cell phone off when I'm in there or at least put it on the other side of the room when I running my electronic scales and they behave very well for me.
Streaming music is a no no now.
Streaming music is a no no now.
check weights are made for a reason
You will have to factor in the actual water you are using to be able to sleep at night. You must use scientific grade pure H20 otherwise the amount of TDS in the water will vary the weight as well as the different brands of brass.
You will have to factor in the actual water you are using to be able to sleep at night. You must use scientific grade pure H20 otherwise the amount of TDS in the water will vary the weight as well as the different brands of brass.
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Mr_Flintstone
Member
Funny thing is that the 100 g test weight always measures at 100 g. I don’t know if my problem starts when I switch to grains, or when I measure small items. I tested again this morning. I measured a dime on my kitchen counter away from all air flow and vibrations. The same dime fluctuated from 34.3 gr to 35.2 gr. That much fluctuation can cause me an explosion if I use it to measure powder. Something heavier, like a loaded 8mm Mauser cartridge will only fluctuate about +/- 0.2 gr, but still not consistent.
The scale is a Lyman Pocket Touch. Not expensive, but has always been consistent until now. I changed batteries and re-calibrated, but it still does the same thing.
On a side note, after I asked for the capacity of water I realized I could just weigh the cases and get the same outcome.
Thanks to all who replied, but I think it’s time for a new scale. I’ll dig out my old Lee Safety beam scale until I can get one next week. It’s a pain, but consistent.
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Mr_Flintstone
Member
Chip creep. Now that’s a term I haven’t heard in years. Really does happen though.Not to mention gamma-ray bursts, though you've got more problems than just the scale when that happens.
AZAndy
Member
Sorry to hear that! My Lyman has treated me well so far. I also have a "Homgeek" scale that I use every morning to weigh medications-- it's sensitive enough for milligrams, and will also do hundredths of grains. Never used it for reloading, but I will if the Lyman fails someday. I hope you find something reliable.
Zendude
Member
Some scales might work well only within a certain weight range.
AZAndy
Member
I was in the IT biz from 1995 to just last month, so some of that stuff is stuck in my head.
I threw away an 8" and a 5.25" floppy just yesterday when I was cleaning out some parts drawers. If you ever want a working 8086, I've got one. A TI-99/4A, too. Never know when they might come in handy. 
6.7 and 8.94 of what? Grains, CC, Milliliter?
Highland Lofts
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This is why I quit usei g my electronic scale and only use the beam scale and backed up by another beam scale.
My ekectronic would work ok andvthen be off, reset it and the same thing would happen. So I put it away, i should dig it out and toss it in the trash.
What do you thing these cheap electronic scales cost when they come out of china?
Fifty cents? Maybe.
Dealing with gunpowder and my firearms I will not chance it on a set of cheap scales made by a five year old chinese girl.
My ekectronic would work ok andvthen be off, reset it and the same thing would happen. So I put it away, i should dig it out and toss it in the trash.
What do you thing these cheap electronic scales cost when they come out of china?
Fifty cents? Maybe.
Dealing with gunpowder and my firearms I will not chance it on a set of cheap scales made by a five year old chinese girl.
troy fairweather
Member
deadeye dick
Member
That's why I like beam scales. ---Old school
deadeye dick
Member
check weights are made for a reason
You will have to factor in the actual water you are using to be able to sleep at night. You must use scientific grade pure H20 otherwise the amount of TDS in the water will vary the weight as well as the different brands of brass.
Make sure you are not using heavy water. LOL
George P
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Besides power spikes, there are also power sags - which damage more home appliances over the long run than spikes. Fluorescent lighting also cause interference.
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