Ok, the problem you have at the moment is the document is based on TNT equivalent of an RE of 1.00. The game uses C4 as it's equivalent for an RE of 1.00 and TNT has an RE of 0.75 in the game.
You will need to adjust all of the formulas from the document accordingly.
Doesn't the M67 have a solid steel case that also needs to be taken into account for the fragments? Here is a good website that shows what some of the fragments look like:
http://machinesforwar.blogspot.ca/2012/03/m67.html
Some more images of the inside of the case and what the fragments look like:
http://www.big-ordnance.com/grenades...CutawayM67.jpg and
http://www.big-ordnance.com/grenades/loworderM67.JPG
The M26 is the grenade with a spiral wound wire core:
http://img.photobucket.com/albums/v1...ut/OR-034A.jpg