I think phenix has a point. A typical consumer scanner these days has a Dmax of 3.5 to 4. A typical B+W neg has a Dmax of around 1.5. That means it will always look soft when you scan it unless you adjust levels in the scan. So that means judging contrast from a scan is only good for scanned prints and not printing to paper. Unless you have calibrated your scans.
But the shadows still look a little dark to me and a little more exposure would push them up the curve and increase shadow separation.
That is why I asked how the metering was being done.
Note that the shadows are the thin part of the neg so what you get on the scan should be fairly representative of what you would get in a print. Its the highlights which are likely to look flat on the scan but it does depend how you do your scan.