The Battering Ram is a very precise shot to land and has very little AOE (area of effect).
It is a shot that curves almost straight downwards when it reaches the peak of its trajectory.
It deals more damage at a further range, varying from around 24-50.
This is initially the same shot as Battering Ram, except the shot bounces up after impact and charges back down for a second hit.
This is essentially 4 Battering Rams being fired simultaneously, at slightly different powers (meaning they won't all land in the exact same spot, so be careful for shooting at far range).
Double Ram Squad
And, predictably, this is 4 Double Rams being fired simultaneously. Not the easiest shot to hit, but at least it will look cool!