I am looking for a good mold to use in my 308 win. I was wondering if anyone had tried this combination. I want a good varmint round prairie dogs, moles, ground squirrels. Range out to 150 to 200 yards. I bid on a 311359 on eBay and won the bid. I have cast a few up and they look pretty functional. Any advise on powder, velocity window, other considerations would be greatly appreciated.