The M72 LAW is given as having the following stats for effective range
http://www.fas.org/man/dod-101/sys/land/m72.htm
-Stationary Target ...... 200 meters (660 feet)
-Moving Target........... 165 meters (541 feet)
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http://www.designation-systems.net/dusrm/app4/law.html The M72 had a maximum range of 1000 m (3300 ft), and effective range against a stationary target was about 10-200 m (33-660 ft).
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http://www.olive-drab.com/od_infweap...ssiles_m72.php
M72 LAW Specifications
The effective range (beyond which there is a less than 50% chance of hitting the target) is 541 feet (165 m) for a moving target and 660 feet (200 m) for a stationary target.
I just picked three at random from a Google search. 200 for stationary and 165 for moving seems fairly standard info. That matches your 150 for moving close enough and in game terms 150 and 165 are the same.
M72 LAW 's are give generally a 3 hex range in the game. Five nations give it 4. We are still cleaning up inconsistancies in the OOB's becasue of the number of different people who have worked on them in the past. We have refined our error checking softwear and in doing so are finding all kinds of little "surprises" that are going to be fixed for the V3 upgrade.
But I digress.....
3 is the number used in 38 OOB's which represents the effective range for a moving target for that weapon. I will need to check other, similar weapons to confirm that that the moving target range has been the "standard" I suspect it's going to be a little of both but maybe I'll get lucky with this one but if that is the case 10 would be a better number to use and I will adjust all the OOB's that use it accordingly
Don