If the cruisers at Denmark Strait had automatic eight-inch guns, would they have joined the fight against Bismarck?
Short answerNot necessarily: their participation would still depend on Holland's orders, the sea state, and the capabilities of the surrounding force.
NotesBetter guns alone would not have brought the accompanying cruisers into the Denmark Strait battle. Rough weather had already affected the force, and Admiral Holland's orders constrained the supporting ships. More capable destroyers or autoloading cruisers would alter the resources available without removing those command decisions. Weapon performance still operated within the actual plan and conditions.