When the fusions first came out they performed real well. Over the last 2 years something changed with them. Not sure what though. I read that they changed the powder type. They didnt seem as accurate as they once were and cleaning the fouling was nearly impossible after they changed the powder. I shoot 165gr. We tried nearly every cleaning solvent imaginable to clean my 308 and nothing was working. I then tried bore butter and that was the only thing that removed the deposits. I will not be using fusions again. Looks like the Federal Premium Sierra Game Kings are back now in 165gr.