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Posted: 11/5/2012 7:27:07 AM EDT
| I have a rcbs 5-10 scale how can I go about checking the accuracy of my scale? |
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You could try a weight check set. I have this one, serves my needs:
http://www.midwayusa.com/product/612694/lyman-scale-weight-check-set |
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You could buy a check weight. I would recommend weighing some quality bullets and seeing if they average around the weight that they should. If your within one or two tenths of a grain I'd say your good. After you get a few known bullets that weigh the same you can check the scale's repeatability.
Weighing charges in my opinion is not so much about accuracy as it is about consistency. If you start below max and work up for each load and your charges are consistent then the results your after should be achievable even if the scale is off +/- a few tenths of a grain. |
| first level your reloading bench top, and mark a couple of lines to that your scale will sit in the same position each time...be sure to not place your scale on any styrofoam or other static charge producing material that can effect the pan...if a calibration set is not available, I use a commercial 55 grain 5.56 projectile... most of my pistol loadings are less than 6 grains, so a 10 charge drop is pretty close to the calibration mass....I use an old Redding oil dampened scale, and once had a hard shell bug enter the dampening oil, and cause some poblems....drop 10 charges, and move the decimal eg. 10 charges = 43 grains, 1 charge = 4.3 grains.... |
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Quoted:
You could buy a check weight. I would recommend weighing some quality bullets and seeing if they average around the weight that they should. If your within one or two tenths of a grain I'd say your good. After you get a few known bullets that weigh the same you can check the scale's repeatability. Weighing charges in my opinion is not so much about accuracy as it is about consistency. If you start below max and work up for each load and your charges are consistent then the results your after should be achievable even if the scale is off +/- a few tenths of a grain. Yes this exactly. I've had my 5-10 since day one back in 1980 something. If it is clean and leveled (zeroed) it should be accurate. I used to use the bullet method too. I would weigh a few singles then weigh 5 to 10 depending on weight and see what I get. Now I just use my electronic to compare to and visa versa. The 5-10 is a classic "beam scale". It pivots on a knife edge on a what looks like a glass bearing, (at least on mine) the other end (I believe) is magnetically suspended so it floats freely. It's a very dependable set-up. If you keep the pivot surfaces clean and the (slip through area) on the other end it should be good unless of course it is damaged in some way. |
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Quoted: I have a rcbs 5-10 scale how can I go about checking the accuracy of my scale? Check weights. Also be sure to zero scale with each use.  I built a sturdy, level shelf for mine, at eye level.  Be sure to cover scale when not in use to keep scale from being contaminated with dust.
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Quoted:
Quoted:
I have a rcbs 5-10 scale how can I go about checking the accuracy of my scale? Check weights. Also be sure to zero scale with each use. I built a sturdy, level shelf for mine, at eye level. Be sure to cover scale when not in use to keep scale from being contaminated with dust. Nice setup. I've got mine a bit more compact (electronic but same idea). One step less of moving the pan from the throw to the trickle. 
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Also be sure to turn off the ceiling fan, it had me scratching my head for a bit....) I load next to a window in the garage. The window is the style where it self latches when you fully shut it. I used to keep it pulled down but not fully latched until I discovered that the draft around the seal would affect my scale sometimes. |
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