gempro 250 scale
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I have one that I dump charges in from a chargmaster 1500. The gempro drifts and I zero it every couple charges. Its a little bit of pissing around but does seem to be pretty accurate and works alright for $140 bucks. There is better ones for more money but I do not feel like I would gain anything more on the target with them, it would just save a lot of pissing around! If I had the coin for a $900 scale I would probably buy one.
I have had decent results with it in a 6 BRX at 600 yards.
Good luck,
Dallas Johnson
I have had decent results with it in a 6 BRX at 600 yards.
Good luck,
Dallas Johnson
"C"
I asked here and on SP about warranties seams the GemPro 250 is the only one with a life time warranty. Depending on your needs ?? and there is a retty good review I came across last week
Wayne
I asked here and on SP about warranties seams the GemPro 250 is the only one with a life time warranty. Depending on your needs ?? and there is a retty good review I came across last week
Wayne
I have one and i like it. Its very repeatable but it doesn't track small changes very well, sometimes .02 to .04 grains off when trickling. but i just take the charge off dump it back in and it is correct. It doesn't drift on me much if i give it the 3 seconds it needs to measure the charge and to zero. also i wiped everything eith a bounce dryer sheet to get rid of static and make it smell good. the other thing that id to help it zero was putting the snap on power cable chokes from radioshack. cost like 3 bucks a pair. I am coming from using a redding beam scale that i don't trust and a cheap mtm electronic scale.
Cotntop,
You mean air movement like from A/C vents ??
You mean air movement like from A/C vents ??
This is a general misunderstanding of how balances work. The Gempro will read a 0.02 gr changes i.e. one kernel of Varget but it takes time to stabilize and detect the change.Justin1098 said:
First, you got to remember that if you have 43 gr of Varget on the pan, that is equal to around 2,150 kernals of Varget not to mention that weighting pan itself weights around 60 gr. So that one kernel of Varget is equivalent to a 0.02% change in overall weight! So a lot of inertia to overcome.
Now a balance can be manufactured to instantly detect such a small change but the downside is that the ultra sensitivity to change will cause wild changes in your reading which would also drive you crazy. What all balance manufacturers do is to put a damper in there to avoid these wild changes and it basically average the values to make sure the small changes are real before it displays it. This is why if you put in a single kernel, you have to wait for it to show the change, and it will but it takes about 5-10 seconds.
So to summarize, being able to have a stable reading and being able to rapidly track very small changes out of a wide weighting range is mutually incompatible.
No misunderstanding here. I know how it works and i know how to make it do what i want it to do. I can drop a grain of varget and wait 2 minutes and 9 ot of 10 times it won't register but i can dump the load into another pan and dump it back and I will have a correct reading in about 10 seconds. Waiting somewhat eliminated. 
If you want anything substantailly better, you gotta spend 1,000 dollars for a magnetic force restoration scale. For me thats a lot of money to save a little time and won't necessarily improve my accuracy.
If you want anything substantailly better, you gotta spend 1,000 dollars for a magnetic force restoration scale. For me thats a lot of money to save a little time and won't necessarily improve my accuracy.
Hmmm.. I usually as a rule can get mine to see that single kernel of Varget after about 5-10 seconds. Try putting the scale on a small wooden platform and then you can tap the platform gently with something like a weighting spoon – this helps to overcome that inertia problem.
Anybody else have this problem?
Anybody else have this problem?
I had the drifting from zero when I first started using mine. I found that leaving it powered up all the time corrected the problem. The directions say to give it a 24 hour warm up period but that wasn't something I would remember so I just treat like any other appliance and leave it on.
Also I found that giving a quick spray of static guard in my work area helps.
Also I found that giving a quick spray of static guard in my work area helps.
Sray53TXTN
Silver $$ Contributor
Same here +1timeout said:
I also use a small scoop to take excess powder of the pan when I over fill. You can put the end of that scoop gently on the pan and then lift it off. The excess weight will briefly show and then the balance will settle on the true weigh when you lift the scoop off.
It is OK to leave the balance on if you know you got stable power supply. If your power supply has frequent spikes, I would unplug it or it will eventually get zapped.
All balance drifts, even the most expensive ones. So no amount of Norsky blood will always give you an accurate balance. To get that, you need to calibrate the balance every time you use it. If you don’t you will eventually get in trouble.
It is OK to leave the balance on if you know you got stable power supply. If your power supply has frequent spikes, I would unplug it or it will eventually get zapped.
All balance drifts, even the most expensive ones. So no amount of Norsky blood will always give you an accurate balance. To get that, you need to calibrate the balance every time you use it. If you don’t you will eventually get in trouble.
timeout
Silver $$ Contributor
"All balance drifts, even the most expensive ones. So no amount of Norsky blood will always give you an accurate balance. To get that, you need to calibrate the balance every time you use it. If you don’t you will eventually get in trouble."
Two ways to go here. 1 - double check once in awhile with your beam scale. 2 - once you have a load that works, make a weight that is exact weight as the preferred charge, then set it on the pan from time to time. Learned that from Tony Boyer's book, so the Norsky blood can't claim that idea. My comment on the Norsky blood was a light hearted way to say that using the scale (when properly calibrated) can be enhanced with proper finesse. Nothing more - nothing less.
Two ways to go here. 1 - double check once in awhile with your beam scale. 2 - once you have a load that works, make a weight that is exact weight as the preferred charge, then set it on the pan from time to time. Learned that from Tony Boyer's book, so the Norsky blood can't claim that idea. My comment on the Norsky blood was a light hearted way to say that using the scale (when properly calibrated) can be enhanced with proper finesse. Nothing more - nothing less.
Hi timeout,timeout said:
You can certainly use the method you mentioned i.e. there is more than one way to skin a cat but why not use the method designed for the scale? You already paid for it….
The scale has both a weight and linear calibration programmed into it and the 20 gram weight will allow you to do one and if you buy a 50 gram weight you can do both. One thing to note though is that using a weight that is exact weight as the preferred charge is a good way to check only for that weight, actually better than the 20 gram weight since it is close to the target, but outside of that weight you have no idea of how linear the balance is – thus the requirement for a linear calibration with two weights.
I was in on the Norsky joke line having lived in Minnesota for more than 10 years and having a Norsky wife– Yea sure! LOL!
waltk
Gold $$ Contributor
Just picked up the Gempro 250 couple of weeks ago. Used it 3 times before it failed.
Worked like a champ the first 2 times. The third time it began to drift quite a bit and not return to the correct value. Hit the on/off switch, it made a funny noise and died. Haven't even mailed in the warranty card yet. Hope they honor the warranty.
Worked like a champ the first 2 times. The third time it began to drift quite a bit and not return to the correct value. Hit the on/off switch, it made a funny noise and died. Haven't even mailed in the warranty card yet. Hope they honor the warranty.
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