I've been using the same Lyman beam scale since 1985.
I take good care of it. Even store it in the original box.
I've loaded tens of thousands of rounds.
A good micrometer powder measure is your friend.
Once you've weighed a particular lot of powder once, you make a note of the setting for the powder measure, and you don't have to mess with the scale again unless you decide to change the load. After a while, you'll find tried and true loads for your guns. There is much less need for scales once you've mastered that.
I still break out the scale and weigh one or two charges at the outset of any loading session. Just to triple-check that I didn't screw-up the micrometer on the measure. I don't worry if the beam doesn't settle completely perfect. I lock-down the micrometer, and soldier on.
Some people spend large amounts of money on elaborate scales, and powder-pouring devices. I don't see the need.
I have yet to find any reason to "trickle" individual charges. Maybe when I start shooting 198's and 199's on a regular basis, I'll try that trickling thing to get that extra one point. Until then, 95% of my points lost at the 600 yard line are due to lack of physical capacity, or lack of mental capacity. That technical 5% means nothing to me in that context.