After more than 30 years, my old Lyman digital scale gave up the ghost. I nspent considerable time researching replacements. I spent a little more to get the Gempro 250 because of the positive reviews.

The instructions were a bit sparse, but after getting used to the programming the Gempro 250 proved to be easy to use & the accuracy is astounding.

I found it was quick & easy to achieve accuracy of + or - .01 grans.That's 10X more accurate than my old Lyman scale! I know that kind of fine tuning of charge weight isn't absolutely necessary, but when it is so quick & easy, why not.

The scale has nice features & it comes with a lifetime (30 years in Germany) warranty.

Do you mean Gempro 250?

Or Gempro 750.

I don't see a 750 on line?

quote:

Originally posted by Savage_99:
Do you mean Gempro 250?

Or Gempro 750.

I don't see a 750 on line?

Oops, yes Gempro 250.

I got it right in the title but somehow got it wrong in the text. Twice!

Double post.

It reportedly offers 0.02 grain resolution. Do you have a calibration weight of that accuracy to verify accuracy, repeatability, and resolution?

quote:

Originally posted by noylj:
It reportedly offers 0.02 grain resolution. Do you have a calibration weight of that accuracy to verify accuracy, repeatability, and resolution?

Yep it has a 20g calibration weight. It weighs in grams, ounces, troy ounces, grains & carats.

It also has a back-lit (red) display that can be set to turn on when a charge is weighed, on all the time or off all the time. The auto-off is programmable up to 540 seconds.

As for repeat-ability, it did occasionally not go back to zero, maybe 4 times in over 200 rounds. It would vary by perhaps +.06gr. I would just push "tare" to re-zero & double check the charge just thrown. This is nothing that my previous scale didn't also do. I always made a habit of checking that the scale went back to zero when the empty tray was put back on the scale. The 1st few times it did that, I checked calibration & it was nuts on after zeroing with the tare button.

As for resolution, it would weigh individual kernels of RL-17. Sometimes when I would trickle 1 or 2 kernels of powder into the tray, it wouldn't register right away, but by picking up the tray & putting it back it would measure the weight difference.

Often I could pick out a single kernel out of the tray when I was .04 over & it would register.

I keep my charges +.02gr - 0gr with little difficulty.