He had a bunch of random shit engraved in the bullets. Mostly shitpost messages. One of them was literally “If you are reading this you are gay. LMAO.”
One of his other ones was “Shut up fascist” followed by a right arrow, up arrow, down arrow, down arrow, down arrow. This is the input code for a 500 kg bomb in Helldivers 2 so he was likely referencing this meme. Basically, the dude’s either an edgelord or he wants to make popular groups look bad. If the news knew what this code was from, I guarantee you we would have a movement to ban video games right now.