Heroic aura works on graves minions (and makes for a very powerful item on her!) but sometimes it will not apply when it obviously should.
In this video you can see it apply to every minion, everything is working as intended here.
But consistently I will use heroic aura and it does nothing...
If your ammo count is higher than your clip size or your ammo count is higher than what your clip size will be upon reload you shouldn't be able to reload. I often reload my clip outside of combat out of instinct and I usually end up lowering my ammo count as a result.