I have 400 rounds of .223 brass from buying Black Hills ammo. They have only been fired in 1 rifle. I haven't bought a set of .223 dies yet. I do have .222 dies on the shelf. I took a case and rolled the neck lightly in baby powder. Then ran the case slowly in the .222 sizing die ajusting the depth just to size the neck. The case chambers in my gun fine. Is this okay or am I wasting my time and should wait and buy the correct dies?