Those first dozen or so are 7-8'' diameter, they are perfect for milling into 4x4's. Only takes a couple minutes per log to make 4 quick cuts and box the heart to get a nice 4x4.
These logs are left from clearing small sections of land close to the mill site, so I decided to keep them to mill rather than turn into firewood. Any trees I fall strictly for sawlogs I try to stay around 12'' and over.