I was using blue dot when I had some cast to shoot. I just took my load out of the hornady book, and selected near the bottom end of the scale. I had no problem with cycling or excess build up in the barrel. Right now I'm trying out 700x, (simply because I was given some free), went online and downloaded recipes from Hodgdons website, ( so the loads are factory sanctioned so to speak), so far so good! Bullets are 200g jacketed truncated cones, with 3.6g of 700x.