Just to throw it out there, even though I cant get it to work (it just doesnt seem to be called) heres the sig for CBaseCombatWeapon::UsesPrimaryAmmo()
Code:
\x83\xB9\x54\x12\x00\x00\x00\x0F\x9D\xC0\xC3
your-name-here: I was actually able to find a few with the method you showed me last night
However, theres one that I cant find a string in anywhere. If you get a chance to take a look, its CBaseEntity::CreatePredictedEntityByName(char const*, char const *, int, bool). I did see that CreateEntityByName was called inside of it, and has a string in it, but was not able to find it based off that.