I must be lucky, my Ranchhand feeds various factory offering and handloads quite well.
I recall this topic coming up previously and it was put forth that it's a production changeover thing. As in prior to this date is problematic, after isn't.
I did do a little careful polishing on the locking bars ( term?) to make it cycle smoother, but I'm thinking this wouldn't affect feeding.
Good luck with it; tagged for interest though