I don't seem to be the only one experiencing this in the beta, but whenever I switch my special weapon, say from a sniper rifle to shotgun, my special ammo count is reduced to zero. I thought that perhaps it kept a separate pool per weapon, but when I switch back to my initial weapon the ammo count remains zero. Is switching weapons deleting my special ammo? I've tried this with primary weapons and I do maintain ammo counts between primary weapons. This seems to be a unique issue with special weapon ammo. I haven't seen a post reporting this, but it definitely seems like a bug due to, if nothing else, inconsistent behavior between tiers of weapons.