Kirk, the rifles ranged from 3,004,120 to 3,051,926 in the rifles I examined. Most were in the 3,020,000-3,048,000 range. In the data base have gathered (about 115 out of the 200 Col. Levin had) the range was 3,004,120 to the 3,090,000 range. There were five rifles below 3,020,000 and two above 3,054,000; the other 108 were in the 3,020,000-3,054,000.
Of course, there are still three crates unopened.