Armory Sponsor
Posted: 3/20/2011 6:40:48 AM EDT
Here is my meager setup,I reload for a bolt gun and occasionally when I get bored I reload for my FAL..The wax can is actually a stand for my powder trickler. I have an RCBS Range Master 750 scale and the thing won't stay calibrated for more than 10 weighs.Example would be the powder tray weighs 159 grains,I transfer the powder from the powder funnel to the powder tray ( prior to re-checking powder charge) and the empty scale reading is -159 grains,fine.After some weighings the scale would read -158.9,-158.8 etc..Would never really drop below .2 grains error..So I have just been compensating for the error,which has gotten quite old.Re-calibrating does nothing,it just continues to go into error after about 10 weighs. Things I have done. Ran the charger from it's own outlet. Stand on cardboard to try and cut down on static electricity. Unplugged the trimmer. Tried running the scale off an extension cord. Right now all I have is a light running from one outlet,and the scale running from another outlet. Has anybody had this problem before,is there anything else I could be doing to fix this problem ? |
|
Quoted: what is your room temp? my loading room is around 58 in the winter. I have to heat my room up to 65ish and my scale works good after that I don't have a thermometer in my place,but I would say above 60 degrees. I will try making the place warmer,thanks for the tip..I'm willing to try just about anything at this point. |
|
Quoted: also you should have calibrated with your pan on the scale.. goto the rcbs web site and calibrate corectly. you only weigh the powder . not the pan and the powder.... I will try that..thanks. I guess you can tell,but I calibrate the scale without the tray because the check weights sit evenly on the base.As far as the light,I just use a regular 100w bulb. The temperature scenario you mentioned has me thinking it might be that. |
| I don't use mine often, but when I do I find, as others above have said, that it works better when it is a bit warmer, and also at a constant temp- so don't just turn the heater on and start weighing. Either keep the room warm or allow everything to come up to temperature. My scale seems to like to warm up about 30 minutes. I also noticed the location in your photo- how drafty is the window? A slight breeze could be causing trouble. Alternating sun/shade could also possibly cause variations. Good luck! |
|
Quoted:
also you should have calibrated with your pan on the scale.. goto the rcbs web site and calibrate corectly. you should turn on your scale and it should be o.oo you only weigh the powder . not the pan and the powder....the pan is "part of the scale" Not true. The instructions call for the calibration to be performed with the powder pan removed. |
|
Quoted:
Quoted:
also you should have calibrated with your pan on the scale.. goto the rcbs web site and calibrate corectly. you should turn on your scale and it should be o.oo you only weigh the powder . not the pan and the powder....the pan is "part of the scale" Not true. The instructions call for the calibration to be performed with the powder pan removed. Never said to calibrate with the pan. he should zero it with the pan , if you look at the original post he is at 159 grains, I dont think he is loading for the 500 nitro. and a mathmatical error could cause a kaboom |
|
I have read that some reloaders have had to put their RCBS scales on line conditioners. We discussed it briefly here: http://www.ar15.com/forums/topic.html?b=6&f=42&t=338546
|
|
Quoted:
Quoted:
I was having fits with a chargemaster the other day and found that the pan and platen had taken a static charge. How does that happen,and how can you tell ? Dunno how it happened. How I could tell is when I started to place the pan back on the platen but before contact the reading went up a few tenths. When I took it away, it went back to zero. Also, powder was clinging (like static cling  ) to them.
|
|
i contacted rcbs about this same thing.
the tech told me to wipe down the scale to remove any static charge. tried it-didn't work. he said if it didn't work return the scale to rcbs w/a check for $35 and they would send a new(reconditioned?)scale back to me. now that i'm about to receive my reground shellplates from hornady and get back to loading i guess i need to get my scale fixed as well! |
|
Quoted: It's minus 159 grains without the pan,once I put the pan on the scale without powder the scale reads zero,or should read zero.I guess my post was confusing saying the minus 158.8 grains empty scale.Quoted: Quoted: also you should have calibrated with your pan on the scale.. goto the rcbs web site and calibrate corectly. you should turn on your scale and it should be o.oo you only weigh the powder . not the pan and the powder....the pan is "part of the scale" Not true. The instructions call for the calibration to be performed with the powder pan removed. Never said to calibrate with the pan. he should zero it with the pan , if you look at the original post he is at 159 grains, I dont think he is loading for the 500 nitro. and a mathmatical error could cause a kaboom Since my first post,I have left the scale on..It now reads minus 154.2 grains without the pan..So just leaving the scale on it somehow went 4.8 grains out of whack.I just zeroed it again and will leave it on with the pan reading zero..see what happens. This time the pan weighed 158.3,further adding to my confusion..Can someone weigh their pan so I can compare ? I am definately going to get a line conditioner. This is not cool,it wasn't a cheap scale and it's only about 2 years old. |
I do my reloading in the basement where the furnace is. I notice that when the furnace is running, my digital scale is not as stable. My conclusion is that it is caused by the large motor running in the furnace. I usually turn the furnace off when I do weighting, or at least I try when my wife is not looking  .
This might be an old husband’s tail, but it does seem to help. |
|
I had some similar problems with my RCBS Charge Master 1500. I ended up taking the pan off and the little plate /table that the pan sits on. I then blew compressed air in the little hole. It fixed the problem. Must have been a small grain of powder that got down inthere. Might be worth a try.
JKM |
|
Quoted: I had some similar problems with my RCBS Charge Master 1500. I ended up taking the pan off and the little plate /table that the pan sits on. I then blew compressed air in the little hole. It fixed the problem. Must have been a small grain of powder that got down inthere. Might be worth a try. JKM I'll have to check that out..I have left the scale on since my last post and it still reads zero..But I haven't weighed anything yet either. I'm almost to the point where money is no object,I just want something that works correctly and stays accurate.Usually throwing money at the problem fixes things..LOL |
|
Quoted:
My 750 does the same thing. I got a Chargemaster a month ago and so far its rock solid. I think I will send the 750 in for repair. I have seen mine drift by .8 in very short time. Exactly the same situation here. 750 drifts, Chargemaster is spot on. Please post results if you get the 750 figured out. |
Armory Sponsor