18x30x50 weapon = 27'000 mass = 30*30*30 minimum border length (with that mass)
...
I don't think that this is important with the new damage system - and not necessarily easy to calculate.
But if it gets into the game, sun damage would be more realistically too.
Perhaps it should only target chunks 1/32 of the ship size.
Perhaps the game could implement killed chunks with no real, just visual blocks which have a sooty/grimy look.
These might yield scrap materials or just have to be replaced/deleted in build mode before they are usable again.
Just apply a 256 bit filter (=existing blocks) over a copied filled default junk chunk.
Is it bad if big guns can attack entire chunks?
They are big guns after all.
Think about a big ship built out of big blocks -- just like a small ship is built out of small blocks.