"fast bulk preloading"
Hm, immediately raises the red flag for me.
I just reloaded yesterday five times ten (5x10) W308 for powder ladder testing with 0.2 grain increments.
I know how time consuming is but the most difficult part is achieving and maintaining 0.2 gn precision and consistency. For this same reason I don't like a digital scale, I use a beam scale.
Using Varget powder, 2-3 extruded powder cylinders +/- variation is a lot of reloading error.
Otherwise I like these discord projects, I've built my doppler radar, an AMP annealer clone, this winter project will be a press force meter for bullet seating.
Also I have one large scale filament printer and one of the best resin printers for my own project.
I may jump to this trickler over winter.