When I would go Pdog shooting, I would buy the cheapest bulk bullets I could find (no fmjs). They might not give one hole accuracy --altho sometimes they did-- but they would definitely shoot to minute of pairie dog. Usually they are over-runs or add-on orders so which company actually provides them may vary.
When you're loading up several hundred rounds, a few pennies a round can add up. I never tried to do any work up for them, I just took my best work-up for a like weight bullet and used that. Maybe a click or two of scope adjustment but otherwise they didn't seem to mind.