What exactly triggers tritanium ammo being shown on ufopedia pages of relevant guns? I thought it was the research for the ammo itself, but seemingly not.
In my current campaign, I've just suddenly noticed tritanium ammo being displayed for all guns, which can use it. But I haven't researched anything relating to tritanium ammo, yet. Besides the guns themselves, of course.
I went back to an earlier save (-1 month), where I had just researched a black ops weapon and lo, no tritanium ammo visible on its ufopedia page.
I looked a the save (the current one) and indeed, research topics of those ammo types are listed under 'discovered'. But how did it happen?