I had to detach it, because I originally attached it on spawn-- it spawned before it shoots because the character is reaching/ fitting it to the bow during the animation–
So I pretty much just changed it all. I set up notify on the animation itself, and called it in the anim blueprint to activate the projectile at said notify. Then I changed the projectile to a homing projectile and set a target for it to home to within the projectile BP via a component tag–skipping most of the math-- I think the character’s hand just moves too much. I skipped the attach/detach altogether and simply parented a static mesh to the socket of the hand withing the BP, turning on and off the visibility via notifies in the animation as well.