Wow! Looking at the price on that Chargemaster, with what I do for reloading, it looks like a very nice piece of kit - but not something I am likely to decide I need badly enough at this stage of my life/reloading to shell out that much money to buy. Maybe if I win the lottery...
There are quite a number of electronic scales out there. Mine lost my confidence. That ultimately lead me down a bit of a rabbit hole where I realized there's a whole other world pertaining to powder scales that I didn't even know existed. Some who haven't completely gone electronic trickler to their complete satisfaction or looking for greater precision with beam scales might be interested in other aspects of weighing scales.
I bought a Dillon electronic scale so long ago that it was covered with a lifetime warranty back then. Up until recently, I don't recall noticing any problems or questioning the readings. Nothing changed; when in use was only near wood, no nearby electronics, metal, etc. A few years ago while trickling to weight in the pan on the scale, I noticed that readings were lagging as I trickled powder; after the measure display "locked" at the setting I was trickling to, a little tap on the pan to make a large change in the weight the sensors were detecting. When it settled again I was regularly several tenths of a grain over weight I had trickled to. Not good.
Haven't trusted it since (although I still use it). Contacted Dillon and found that at some point or other the lifetime warranty disappeared; now their policy is that it is a third party product that they sell with Dillon's name on it, so no lifetime warranty - but would you like to buy a new one from us? NO!
To be clear, no complaints about the response from Dillon, I bought this electronic scale when they first started selling them, and I think that must be maybe over 30 years ago now. I am just not convinced that all electronic scales are reliably accurate, just because it's an electronic scale, whether Dillon or anyone else. There's a quality range there.
I understand that a "wandering zero" (kind of like the Lee Enfield No. 5 rifle is accused of having?) is common to a lot of electronic scales, especially the less expensive ones like Dillon; I have seen threads on this issue on other forums on the internet. Not an issue unique to me and my scale.
So I'm using a few different work flows now for the Dillon scale. First, I've found it is repeatably accurate as long as you're not gradually changing weight i.e. by trickling powder. So it's accurate for sorting cast bullets by weight, cases,or to check the weight of a charge thrown into the pan and then put on the scale. There the scale goes directly from unloaded, to the end weight you are measuring all at once. Then it's accurate and the weight it displays is repeatable if you repeatedly measure the same object. But where I'm trickling to weight, I throw the charge just short of the target weight with a powder measure, and then trickle to desired weight in my good ol' Ohaus/RCBS 1010 beam scale that I've had for decades.
Anyways, while investigating my now-suspect Dillon, I discovered there's a whole segment of reloaders, mostly F-Class types, who go to great lengths in order to precision tune their beam scales: lapping the beam bearing contact edges, adding gizmos, precision pointers, etc. All the way down to adding a micro camera to their tuned scale so that they can use a 7" tablet for a closeup of the pointer/zero alignment:
Beam Scale Video Enhancements
There's a little universe of essentially self taught balance beam technicians who you can send your beam balance to and they will tune it from top to bottom, add enhancements, etc. I didn't bother looking at pricing for those services as my current kit was good enough for my needs, and my somewhat anal procedure and checking when weighing individual charges was good enough for my needs.
I regularly check both the still-useful but suspect Dillon and my 10-10 beam scale with the check weights I've also had forever; I assume that probably sooner or later my many decades old 10-10 will need servicing, but for now diligent regular cleaning of contact points and careful storage away from household dust, etc has it still reliable and precise enough for what I'm doing with individually weighed charges for big game hunting rifles, Service Rifle, varmint rifles, etc.
Anyway, whether balance beam or electronic, there are scales and there are scales. And then there are people who will really tune up your powder scales if you believe you need even more accuracy.
Just some things to consider in the reloading weighing universe out there. And all electronic powder scales are definitely not created equal.
