I wouldn’t say it measures a pre-set/calibrated charge any faster than an Autotrickler with ingenuity precision upgrades. It CAN, and sometimes DOES, but generally I’d say they’re about the same on average to get a 30 grain charge weight. That’s just for the charge though, if you have it mounted above a Dillon 550 it is quicker overall to get it in the case than an Autotrickler.
It’s a gram balance scale, so it doesn’t do, say, “+/- .02 grains.” That said, you can absolutely, positively differentiate one kernel of varget. If it happens to stop trickling before reaching your desired charge, you push a button and it trickles one kernel. The reason it stopped short was because the charge it weighed was the weight equivalent of less than one kernel (weight of varget at least) from the weight you set it for, if it trickled one more it would be over the weight.
It’s a pain in the ass to set up or change weights or powders to me. But once it is set up, yes, the process is faster for me because mine dumps into a Dillon powder funnel. On a 550c, station one has a mandrel, station two the powder die (where the Prometheus dumps), station 3 is Mr. Bullet Feeder bullet drop die, and station 4 is the seating die. I preprime cases either on an automated 750 or 1050.
So, yeah, it has a place. It makes reloading more enjoyable for me when I’m doing a bunch of cases. If I’m doing 20 rounds of some charge weight not set up on the Prometheus, my position is the Autotrickler setup is easier to get set up and go for that kind of session. There may come a time really soon when a further development of an existing system (looking at you
@Ingenuity1) can sit on top of a progressive press and improve on what the Prometheus is doing now; but really there isn’t anything other than some Frankenstein shit that can attempt to match what Prometheus is doing NOW in this particular configuration.
I don’t want to take anything away from the Prometheus. It is a phenomenal tool. Fantastic engineering and manufacturing.