IMOP… If you’re going to put a cheap 6 volt control unit on a stand and fill feeder I you’re going to get much slinging distance.
I have an All Seasons 600lb stand and fill feeder equipped with the All Seasons 12 volt control unit. I’m guessing this feeder will sling corn out greater than 30ft.
I just purchased my second stand and fill from Ramball36 and I will be installing a good quality 12 volt control unit on it this week.
I will say... Ramball36 builds one hell of a stand and fill feeder and if you’re ever in the market for one you owe it to yourself to at least checkout his feeders before purchasing one

I started using stand and fill last year and my only regret is I didn’t start using it sooner.
My plan is to replace all my remaining ladder feeders with stand and fill feeders in the near future.