Thanks for the suggestions so far. I was hoping to keep the price around $400, but I'm flexible.
I think I'd prefer something with a mil-dot rectile. I was looking at scopes with target turrets, but I think that would be a nuisance in the gopher fields, when target distances are constantly changing. I'd rather learn the rifle, and get comfortable with holdover.
Decent zoom is a must. I've already got a Harris bi-pod on it, and I've been regularly using 9x to pick off sod poodles with the bushnell I've got on it now