That jeweler's scale is a POS. They have tons of them on eBay all the time. I've heard from more than one source that they aren't good for reloading. They don't stay accurate, if they are to start with, and you have to recalibrate all the time during use. Doesn't it weigh in grams and then you have to figure out grains to grams? I'd toss it. It won't be very reliable at all.
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Yes I believe ya'll are correct. I wasn't expecting great accuracy out of the jeweler's scale only paid $10.00 for it at a Flea Market :? 
I'm just doing this "research" to satisfy my own curiosity more than anything. When I started I expected the RCBS scale to be the most accurate, but its looking like the Lee is going to win the accuracy contest. The Lee & RCBS are reading about the same in the lower weight ranges below 20 grains they are within 0.1gn. of each other but when you get up in the 80-100gn range the difference grows to 0.3gn. I'm still doing research, I'm going to get some more calibration weights so I can really narrow my results. Lee claims that there scale is more accurate than RCBS and I'm finding that to be true so far. The issue I have with the Lee is it only gos to 100gn. so I can't use it to weigh bullets. I would just stick with the RCBS but it doesn't look like its going to be that accurate in the higher ranges. I'll post the results when I'm done.
The jeweler's scale does automatically convert to grains & appears to be more accurate than the RCBS in the higher ranges. One of the reasons I'm doing this is I never trusted the RCBS scale, couldn't put my finger on it but it just didn't seem right some how. I would buy an elec. scale for reloading but can't afford $100.00 & up right now and I just love tinker'n with shit like this. It keeps me out of trouble ya know!
I'm just doing this "research" to satisfy my own curiosity more than anything. When I started I expected the RCBS scale to be the most accurate, but its looking like the Lee is going to win the accuracy contest. The Lee & RCBS are reading about the same in the lower weight ranges below 20 grains they are within 0.1gn. of each other but when you get up in the 80-100gn range the difference grows to 0.3gn. I'm still doing research, I'm going to get some more calibration weights so I can really narrow my results. Lee claims that there scale is more accurate than RCBS and I'm finding that to be true so far. The issue I have with the Lee is it only gos to 100gn. so I can't use it to weigh bullets. I would just stick with the RCBS but it doesn't look like its going to be that accurate in the higher ranges. I'll post the results when I'm done.The jeweler's scale does automatically convert to grains & appears to be more accurate than the RCBS in the higher ranges. One of the reasons I'm doing this is I never trusted the RCBS scale, couldn't put my finger on it but it just didn't seem right some how. I would buy an elec. scale for reloading but can't afford $100.00 & up right now and I just love tinker'n with shit like this. It keeps me out of trouble ya know!
Yes we do know.
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