Can someone explain drift? Does the scale move off of zero?...
That's exactly what happens. The zero reading goes screwy and "zero" suddenly looks like some other small but significant value of plus or minus what it used to be.
Can someone explain drift? Does the scale move off of zero?...
Thanks for the confirmation, nice to know my cheap Lyman holds zero!
I've been reloading for almost 40 years I tried a RCBS 750 a few frustrating try's later I went back to my beam scale. You can set a beam scale on your desired weight and its done, no calibrating no warm up and you don't need to notice when the thing doesn't go back to zero or remember what weight your loading when doing successive loads for a field test.
RCBS 750 for sale only used once and cursed at several times, you really can't teach an old dog new tricks.
If you are a competition benchrest shooter and shooting over 400 yards the FX-120i is NOT what you want to buy since you will be ± 1 or 2 kernels of powder. You either want a Prometheus powder measure or the Sartorius Entris64-1S.A&D FX-120i is the best money I have spent for precision reloading. I had a Gempro 250 and had to send it back a few times. Waste of time and money
Back to the OP's original question. For most reloading, the RCBS 750 will work fine. The trick seems to be to leave it on all the time. Mine doesn't drift and calibration is always right on. If I was shooting at the national level I might upgrade to the $1000+ unit, but I'm getting ES and SD in the single digits (measured with a Labradar) with my 750 and that's all the precision I need right now.
"There is currently a manufacturing problem with the GemPro-250s. We have received a lot of complaints about the batch we sold. We are not selling GemPro-250s until that problem is solved. You may be able to find them elsewhere, but you can't tell at a glance if those GemPros are older and pre-defect or if those dealers are just selling the problem ones anyway. The issue is that they will work just fine the first few times you use it, and then it will stop working. We can offer you some alternate scales if you are interested.
Thanks"
"It's really a shame the GemPro 250 is having the problems it's had recently, given its popularity, and previous record. We had them pulled for a while earlier, to fix the accessory box lid catch, which had nothing to do with the operation of the scale, but was annoying. They came back with an improved accessory box, but for some reason the scale became the problem. I even tried to get hold of some of the older stock with the bad accessory box latch, since a lot of people were willing to deal with that to get their scale, but those stocks ran out very quickly."
Back to the OP's original question. For most reloading, the RCBS 750 will work fine. The trick seems to be to leave it on all the time. Mine doesn't drift and calibration is always right on. If I was shooting at the national level I might upgrade to the $1000+ unit, but I'm getting ES and SD in the single digits (measured with a Labradar) with my 750 and that's all the precision I need right now.