I am interested in upgrading my Pact digital scale. I have had some problems with it and have been told by Pact that they can no longer service it. 
I am looking at the GemPro 250. It has (allegedly) accuracy to 0.02 grain, can be run off four AAA batteries ( or a power cord) and is priced at around $165. The battery option is attractive to me because I have only one electrical outlet in the house that doesnt have multiple devices connected to it and that one is in the basement which is always cold, year round. 
If any has any experience with this device other options I would appreciate your input. I also have the RCBS Chargemaster which I am very satisfied with . Would use the new scale for weighing bullets, primers, cases usw. 
Thanks!
Joe S

Just found out the GemPro250 has been discontinued. If anyone can recommend another product with similar features, please let me know. 
thanks!
Joe S

Joe_S wrote on Apr 18^th, 2025 at 9:27am:


What kind of problems are you having with the Pact scale?

Wayne

One day a few months ago I discovered that my pact scale was giving erratic results 
Upon further investigation I realized that fluorescent lights cause interference along with the fact that having more than one thing on the electrical circuit is problematic and that the scale needs to be warmed up for 30-60 minutes depending on who you ask .
Since then I found the one electrical circuit in the whole house that doesn’t have any thing else on it.
Then I replaced all the fluorescent lights with led lights
The last problem is the temperature in the basement 
It varies between low 50s in winter to mid 60s in summer. I checked into it with a HVAC contractor and there really isn’t much I can do.
So now that I have fixed everything I can fix I have been testing it and find that once in a while I am getting results 0.1 grain off from the check weight. Due to the fact that the scale is only rated to .1 grain , I believe the true range of error is probably close to  .3 grains
I have been satisfied with it up to now so maybe I should just live with it now that I have the light and line interference my problems are probably minimized  however I use it to weigh primers and cases and bullets and with primers a tenth makes a lot of difference 
So I am trying to see what my options are.
Hopefully this makes sense
Joe s

I, too, have a Frankford Arsenal one that I love for weighing bullets, brass and such. Never use it for powder, at least when I'm wanting the most uniformity I can get. It has a tenth or so sometimes, but it comes and goes. I can weigh a single case, for instance, repeatedly and get total exact results. Then, an hour later or whenever I do something like that again it'll wander up and down just a little bit. Dunno why.

I purchased an analytical balance to use. It uses a 'force restorative' weighing mechanism vs the 'strain guage'. The main difference is durability. If you accidentally drop something on the strain guage you can damage it or even destroy it (stretch the strain guage past its elastic ability to return to original size). The force restorative type is a bit more robust. Instead of measuring the change in resistance due to changing length of the guage material it measures the amount of energy (current)  needed to bring the balance pan back up to its 'null' position (think electro-magnet repelling like electromagnet until equilibrium is reached, sorry best I can explain) . Of course it's $$$$$ vs $$.
I just have more peace of mind with this mechanism. YMMV. No I probably won't take it out to the range with me but that's okay for my needs. 
Good luck on your quest.