Duct Tape Mod and longbow grenades

I’ve noticed that when using longbow grenades with Duct Tape mod, that the grenade isn’t actually fired where you were aiming at. I’m not sure, why, maybe Duct tape mod always aims them a little higher since normal grenades are arcing projectiles, just so you can get better range with them but it really just means that unless you are fighting something utterly massive or the grenade has some kind of homing properties, you are usually gonna miss the grenade and instead hit a wall.