whitehackle Posted November 8, 2009 Report Share Posted November 8, 2009 I have just started reloading and have got some MTM scales. As I'm trickling my powder onto the scales every so often the scales will jump 0.1 of a grain. When I was trying to measure to 21.2 gr the scales would not rest at that reading, I could get 21.1 and 21.3 but it would jump th 21.2 every time. I changed the loading grains abit to get round this. My only consern is that if I carnt get specific weights then how accurate are the scales? Quote Link to comment Share on other sites More sharing options...
chrisv Posted November 8, 2009 Report Share Posted November 8, 2009 When these types of scale first became available on Ebay, most of them were pretty poor and difficult to use. They seem to have improved a lot recently. I have the MTM ones as well, and I have been surprised how good they are. I have compared them to my RCBS beam scale, and they give the same readings. They are much better for multiple weighings, but I prefer to use the beam scale for powder weighing, since you can see the beam start to move. If you're not happy with the scales, I would try to borrow a different scale from someone to compare readings, or you'll never be confident that your weights are correct. Quote Link to comment Share on other sites More sharing options...
lineshooter Posted November 8, 2009 Report Share Posted November 8, 2009 I have the Mtm digital scales and mine do the same, the were nearly £40 so not what I would call a cheap set. I think it may be the individual shape/weight of the powder grain, with some powders its ok, with Varget powder I can get 46.9 or 47.1 when I really want 47grains, I recalibrated and changed the batteries but it still did it, though its spot on with bullet and pellet weights. Try taking the powder tray off when there is powder in and then put it back on a couple of times, see what readings you get, but I think there is a variation of +/- of a grain. Quote Link to comment Share on other sites More sharing options...
henry d Posted November 12, 2009 Report Share Posted November 12, 2009 Interesting post, I use a beam type and find Chris and Fister`s comments very interesting. Weigh one bullet a hundred times under different conditions at different times and your scales will always vary some. Therefore if you have a beam scale and round that you want to replicate, simply pull the head and weigh the powder and simply set that as your weight on the beam scale, if it is for working up a load then it will be hard to replicate in such circumstances with the electronic scales as you have said. Quote Link to comment Share on other sites More sharing options...
jamie g Posted November 12, 2009 Report Share Posted November 12, 2009 stick with a beam scale you wont go wrong Quote Link to comment Share on other sites More sharing options...
henry d Posted November 13, 2009 Report Share Posted November 13, 2009 "BULLET" It is simply a method to repeat weighing the same object( a bullet was merely a suggestion) multiple times to highlight to yourself how much any scale will vary. It is nothing to do with load replication whatsoever. It involves NO powder, case or primer, JUST A BULLET Yeah, I get it, it just provoked another thought Quote Link to comment Share on other sites More sharing options...
garyb Posted November 13, 2009 Report Share Posted November 13, 2009 I've just bought some RCBS digital scales (Chargemaster 1500) from a good friend of mine... I'll be interested to see how they perform, I may even purchase the powder thrower attachment to go with I already have an ageing Redding balance scale. Quote Link to comment Share on other sites More sharing options...
njc110381 Posted November 14, 2009 Report Share Posted November 14, 2009 I use an RCBS beam scale. It's dead easy to be accurate to 1/10th of a grain. I wondered how much beam movement there would be for +/- 1/10th so I weighed a charge and then moved the adjuster on the scales 1/10th. The beam moved by about 3mm, so quite a long way really. When you're using a very coarse powder you get a noticeable movement with each kernel dropped by the trickler I considered a digital scale, but this post has put me off a bit. I'll stick with what I have! Quote Link to comment Share on other sites More sharing options...
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