No, it won´t. It´s still one of the highest impact snipers that lets you deal huge amounts of damage without the needing to reload to stunlock a boss. Can you stunlock a boss with reloading ? The black hammer has the same impact as spear, better stability and worse reload (cancelled out with white nail) and the ability to deal loads of damage more quickly as the spear. So no, spear is absolutely not better in every way. And black hammer will not be a worthless gun.