Forget about the cheaper digital scales. They are fragile and don't seem to last very long. For a primary scale, I usually recommend a good balance/beam scale. RCBS has a 505 or similar model today that is a workhorse. A mechanical scale is usually a bit slower than the digital, but I have found them to be very reliable. I've had over a dozen digital scales over the last 15 years. I have only three that still work. The rest stopped working for one reason or another and were not worth repairing. I've had about ten mechanical scales over the last 45 years and they all still work.
I have an ancient Lyman balance that weighs grain for grain with my RCBS as well as my acculab that I will ship to your door for 25 bucks. I think the pilgrims bought this model for weighing black powder charges, seriously though.. Cheap digital scales are not worth buying unless all you do is load shotgun shells.jeff
I received a scale like what Blueraven is showing as a christmas gift and it works well but you know what, I still go back to my old RCBS balance for verification. I got the RCBS scale in the early 70's and it has been around the country with me and never let me down. Really a balance for reloading doesn't need to be any better than that, plus no batteries, no cords.
Electronic scales are quicker to use, but most people do not allow the unit to warm up for the recommended amount of time. Accuracty, linearity and hystresis are calibrated on a fully warmed up load cell. The numbers may not be the true weight, even though the later models have some internal temperatur compensation.
When electronic scales have to be certified for Drug companies, food companies, nuclear plants, chemical plants, etc., they test them against a beam balance scale at the standards lab, and they only test them after they are temperatur and humidity stablized. What can we conclude from that? This is not hearsay, I have been there in Federally certified standards lab and seen it in person.
I use a PACT electronic system with a balance beam to check a powder drop every now and then as I am loading. Purchased it from Cabalas Hasn't fugged me yet. Have been using it about three years now. The beam I have had about six years now. Have sent it in to LEE to have it checked and it has comeback with tripple A's on everything. Send it in every three years. Just got it back a couple weeks ago. This was the second time I have sent it in for a check. Didn't charge me very much except for the extra for shipping it back to me. For a total of twenty bucks. (Rich.inAZ.orinnameonly).
I recommend a 5-0-5 or something similar. The only scale I have ever owned is Lyman Ohaus M5 purchased from either Herter's or Gander Mountain in 1965. It still works perfectly and I expect it to outlast me.