

Even if the note ever existed, I doubt the FBI’s ability (or the current administration’s desire) to recognize the inherent underlying irony of many groyper tropes. I especially doubt the FBI’s competency after their “mistaking” a common ammo manufacturer’s mark as a leftist commentary.
There’s a couple things.
The first reports, right after the shootings, were that the bullets were described with a pro-trans message. Except that turned out to be TRN, which is the maker’s mark for Turan ammo.
The second reports were that messages were written on the ammo. They haven’t released any photos but they say the “new” messages are
The thing that strikes me is that all of those seem to be fairly lengthy messages to engrave onto a bullet. And the messages are more viral meme remnants of the terminally online.