Ohey Colapse, what are the standard grenade allotments and special ammo limits for the rest by chance?
1 additional clip of special ammo (Stalker, Kraken, Dragonfire, Hellfire for the rest). For nades, most of the guys included grenades in their loadouts however those of you who haven't done so can do it on mission basis - you can take three grenades with yourself (frag, krak, blind or stun).
Missile Launcher with Krak Missiles is effective too..... You could even have mixed ammunition, given that even regular Astartes easily can change the ammo feed.
Now that Watchman reminded me... Please, when you go to the armory to pick gear or whenever possible, those of you who carry multiple types of weapons in their loadouts, please specify what gear exactly are you carrying alongside yourselves during the upcoming mission so we can evade any possible problems.