The one thing that surprises me about this thread is that people talking about the marked value being off are observing the weight being higher than marked. Historically I have observed and heard from other folks using them that the marked values are higher than those thrown. I can't remember ever having one throw heavy. I guess either way it just becomes obvious that the careful loader will check his rotors against a scale. BTW, I find the Lyman Accumeasure™ rotors and Lee dippers to be slightly "optimistic" about the weight they throw as well.

Froggie