How a reliable breech block would change an age-of-sail gun

How would a reliable sliding or falling breech block affect age-of-sail warship design?

It would reduce the movement needed for loading; the discussion raises metallurgy as a separate, unresolved issue under a premise that grants a working mechanism.

The premise explicitly grants a working sliding or falling breech block to an age-of-sail gun. The first benefit identified is less need to run the gun in and out for reloading. A participant raises metallurgy and tentatively suggests forged steel rather than a cast component. The reply keeps that feasibility question separate from the hypothetical, which already supplies a functioning mechanism. A Remington rolling-block arrangement is offered as a related example. The exchange does not demonstrate a specific early naval conversion or calculate its rate of fire.