why bulk? they shoot energy not a 2 tonnes HE shell they need to direct the blast and disipate the heat quickly with a coat of reflective paint they dont even suffer material stress
you know what? im just goint to take this away before someone feels aluded... XDDDDDD
(Maybe I'm being a little harsh here. Please take note, I'm not commenting on your ability to model, merely what you have presented. I like the idea, and I love the initiative you have put forth.)
and men those are actually torpedo tubes from a friggate or a destroyer but due of the size of the naval guns mounted on the turret it looks more like a friggate
Edit: cruiser missile turret added
you know what? im just goint to take this away before someone feels aluded... XDDDDDD
While your box design missile launcher is fine, I suggest making it 2-4 large launch tubes(no grate). The 'infinite ammo' can be explained as internal reload mechanisms that feed new missiles to their tubes.
And that is a missile tube. I know the other was a frigate torp mount, but the designs are similar to missile racks. My point still stands. You'll want larger tubes than the hellfire-sized holes. Think of them as single fire reload-able tubes instead of a launcher stuffed to the brim with missiles.
My only complaint of the Cruiser launcher is there doesn't appear to be a way for the missiles to be fed into the launch tubes, but that's not as important.