Good afternoon! I really liked your cannon towers, but their appearance does not really match their characteristics:

The "heavy" tower has thin small-caliber barrels
The "light" has a powerful large-caliber barrel

Moreover, they are investigated simultaneously, but it makes little sense to use them simultaneously. It turns out that the "light" tower is nothing more than an intermediate ingredient to create a cooler "heavy tower"

I suggest balancing these guns like this:

1.Swap them:
- define double-barreled as light
- single-barreled to be defined as heavy.

2.Make different ammo for them
- For light turret - use vanilla tank ammo
- For a heavy turret - leave the cassette.

3.Make two recipes instead of one
- research the light turret first
- and after a certain period of time, explore a heavy turret with cluster shells.

Then the light turret will be relevant during the early game, and the heavy turret will logically replace it in the later period.

And the thicker barrel of a heavy turret will organically fit into the lore of the game, because semi-automatic firing from cluster shells requires a total redesign of the turret barrel

Thanks!