Just an update for posterity. Its been six months and the ProScale LC-50 is doing just
fine. It has remained calibrated and is
still accurate, measuring known
weight match bullets and powder accurately and precisely, giving me the same reading on the test items I used when I first got the
scale. Its only been 6 months, but I've weighed just about every coin I have, and used it for weighing bullets for reloading and for historical analysis of rifle rounds from various countries. Its not been used as heavily as a lab
scale would be used, but its been used probably more than an
average coin collector would use it.
Pleased, so far. Time will tell...