I measure the beans in a 1/4 cup measuring cup. Throw them into the grinder.
When I used my Rocky I do exactly what you do.
When I use my La Cimbali with a doser I use the tamper on the front of the doser when the basket is half full. This a very light tamp just to break up clumps and fill the basket more evenly. Then fill the basket till it is just heaped and level off. Then tamp.
I dont use dose weight method. I probably should try, see what difference it makes. Happy with what I do now.