I never really used it with the chargemaster. It was quicker using the Scott Parker layman. I got rid of my chargemaster before I got my gem pro. With the Lyman I had it set where it would shut off about 1-2 grains low and I would trickle up to the finish weight. I like the omega but going from one powder to the next you almost have to retune it to the new style powder. I went Prometheus because it supposed to be super accurate on its own. You might have to trickle a grain here and there. I've been told once it's up and running correctly the Prometheus will charge faster than what I'm using now.