Were Type 3 shells a likely cause of Kongō's explosion?

Are Kongō's 14-inch Type 3 anti-aircraft shells prime suspects in her explosion?

They are a possibility, but there is insufficient basis here to call them the prime suspects.

The Type 3 anti-aircraft shells remain one possible explanation for Kongō's explosion. Their presence alone does not establish that they were the leading cause. No comparison is offered that would rank this explanation above the alternatives.