I am getting ready to start loading for mine...I've read very mixed reviews about US869. It's very slow, so case fill becomes an issue. I almost pulled the trigger on buying some over the past few months, but decided to hold out for Retumbo or VV N570. I was finally able to score some N570 a couple weeks ago from Powder Valley so that's what I'll be using. I have a couple pounds of Retumbo and a bunch of H1000 to experiment with as well. I've also heard good things about Reloder 33.