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Having guns like on battleships would send the ship spinning mad since the gas from the explosion pushed not just the projectile but the gun itself. The ship should have fuckhueg mass to absorb the kick.
Maybe railguns, but those need energy source.
Rockets or rapid firing cannons, like the Vulcan, or similar revolving miniguns are more feasible.
Plus spacebattleships needs to be get in distance somehow, which is a problem in itself. In space everything just orbits around something, so these orbits of opposing forces need to be calculated so they can fly away next to each other and pepper the enemy for the little time while they are in close enough proximity to use weapons.
I think we talked about a realistic space battle simulation game. I can't recall the name.
And the writers of The Expanse had some feasible ideas too.