I have used a Lyman #55 for decades, it's smooth, have a rhythm, double tap the handle twice at the bottom of the dump.
If you don't some grains will stay in the bottom of the drum Shute to the cartridge with any static around, so it's a habit and it works.
I usually weigh to get going, and then start loading, stick, ball, flake it don't matter. Big or small charge, this measure eats it all.
Just make sure to tap the handle against the stop.
