I have a chance to buy 12 boxes of these Sierra #1410 rifle bullets from an acquaintance at a fair price. .224 diameter 52gr. hollow point boat tail. He doesn't need them. My question is, do I need them? It's been many years since I have loaded .223/5.56 but I'm pretty sure that I still have a bunch of brass. I have a Mossberg MVP Predator and an AR clone (Palmetto State Armory upper) that I would be loading for. My initial thought is that it's a fairly light bullet. I've never loaded anything less than 55gr.