And both were well answered by the first response. (Thank you @TheTomatoGuy!)
If you still haven’t wrapped your head around why the cart farmer is superior to the 50 shot, and insist on “more automagic”, consider looking at another device that gets good reviews around here: Jet-Fueler Semi-Automatic Cartridge Filler
We’d love you to level up together… but by all means ignore the koolaid you’ve been offered if that’s what brings you joy.