Why extreme gun elevation does not guarantee better battleship fire

Could a much heavier turret make smaller battleship guns effective through extreme elevation and plunging fire?

Only at a steep cost: loading limits, slower cycles, tracking error, mechanical vulnerability, and changing engagement range can erase the theoretical advantage.

A heavier mounting might raise an 11-inch gun toward 45 or 50 degrees, but the gun may then need to return to a lower angle for loading before reacquiring the target. That longer firing cycle gives the enemy more time to close, increases prediction error, and places greater stress on bearings and balance, while shorter range eventually removes the plunging-fire geometry the design was meant to exploit.