well, that tells you the coil is getting voltage in the start position, but, I would have thought it should get over ten volts...have you tried charging up the battery? It should have read more than 13 while running if the alternator is doing its job and the battery is healthy...imo, anyway

Unless there is a big drop in the bulkhead connector, but, normally, if the battery reads 12 volts, it is basically discharged.

Also, have you checked the gap in the distributor to make sure it is close to .008". I noticed my car does not like to start on a weak battery if the gap is too large