I've been using RL-16 for 6.5 Creedmoor, but I'm almost out and can't find any on line. It looks like RL-17 is also out of stock in most places. CFE 223 is one spot lower on the burn rate chart and BL-C (2) is one place higher on the chart. Are either a suitable sub for RL-16? My Hornady book doesn't have loads for either in 6.5 CM with 140 grain bullets.