All depends on how anal you want to be Les . A Prometheus will measure to about .03 gr and will do about 6 to 10 charges a minute when set up properly , I'm lazy so cut that in half for me. I own about seven various types of scales/ throwers and it is hands down the best.it will do Varget , 4350,4831 and most stick powders that are consistant in length of cut , I had Cole make a plate for mine to do n133 and the smaller stuff. The down side is there very pricey for a new one ( cant actually buy you lease for 25 yrs) and you wait.long range guys are always looking for them so you don't see many used ones for sale