I sincerely doubt there is a better more accurate progressive anvil powder measure on the market ,than Dillon's !.
MY scales DON'T lie ,if I set it for 76 Grains ,it throws 76 grains . If I set it for 5.6 grains it throws 5.6 grains ,each and every time .
Having multitudes of them ,along with their respective Dies setup on tool heads , I can switch calibers in a matter of 5 minutes by simply changing shell plates ( Provided small or large primer charging are same ) as that requires additional time to set .
This is one of My Original older 550's ,which I bought from Mike Dillon in the late 80's and it still produces EXCELLENT QUALITY ammunition ,provided one does their part