If we have the cull logs and tops dragged up to a central site (landing) with four guys we can cut and split 17 to 20 face cords a day. 24" length seasoned oak, that's starting at 7:30 am and staying with it to 5:00, taking a short lunch break. Splitting takes the most time, we use two guys on mauls and two on the splitter. If all we had to do is cut we probably could boost wood output to 32-35 face cords a day if all we had to do is buck it up and not touch it, just sawing. We have burned over 3.5 gallons in a day may be closer to four, depends on how much the 660 is used, it's a fuel hog compared to our 60cc saws. I think anyone that is experienced and in good shape can cut and split 10 face cords a day by themselves in good cutting conditions. I've done it numerous times and so has my oldest son. The key is having easy accessible wood, sharp chains and help that wants to work.