I used to have (I guess I still do) a 160 yard range set up to shoot from my pole barn deer blind. I had to make a berm for this and I moved all the dirt to do it.
It was only a small berm, maybe 8' high and all the dirt came from either my borrow pit (about 100 yards away) or from previous dirt work (maybe 30 yards away).
Even that small berm pretty much took a half a day or more. Note I used my Kubota L4330 with 6' wide 1/2 yard capacity bucket. All that work for a relatively small berm.
This is my 100 yard range and it works well. It needs to have dirt moved from the bottom to the top once or twice a year depending upon rainfall. The soil is a sandy loam and I had no trouble digging with a Kioti DK45HSE nor a TYM 394, although the TYM's reach is a bit short to reach the top of the ties. There happened to be a mini-x available last month and it was much easier to move a large amount of soil in a shorter period of time for the annual maintenance. But the tractors worked fine in this soil type.