The .30-06 was the United States primary sniper round in World War I until sniper rifles were standardized in Vietnam. The .30-06 may be limited in law enforcement due to over penetration, but it could be a good round for military use. It offers ballistics better than the .308 but doesn't punish the shooter like some other rounds. Click here for some more information on the .30-06 round, page by Hitach Industries, Inc.