Moose you are correct that each gun states that it has 100, but that's a %.

Also I was off by double on how much the Rifle could fire, every four shots it decreased by 1%, which would mean it has a capacity of 400 shots instead of 200. As well the Pistol fires around 2.5 shots for every 1% coming to roughly 250-280 shots, with only 7 overcharge

so New Figures: Rifle: 8.8MJ/shot, Pistol: 13.4MJ/shot, OC: 500MJ (bear in mind most of it is channeled into the magnetic field, this is so it can home in on targets, basically I’d say only 1% actually discharges and the discharge is very unconcentrated in comparison.)

As for the issue of game canon vs book canon, it would be a more likely assumption that the books are played out at a setting somewhere between Heroic and Legendary. By that I mean that All weapons deal Legend damage, but are at Heroic accuracy. Don’t forget the game mechanics make the enemies harder to kill than they would be on higher levels. I'd also say that allies die like legend and covies die like easy. fair assumption?

Also the reason that those troopers in halo could take that kind of punishment was do to rely good armor and a good shot of Biofoam. Basically think sealant, disinfectant, and blood cloter, its also speeds healing. Most new armor has an auto-dispenser built in.

oh and also the various races of the covenant are rely risiliant in comparison to a human, that and a mortal wound to us, might not be for an Elite.