Anyone else using RL-17 for there creedmoor? Its listed in the hornady book but not on alliance web site for reloading. Works great though. Best grouping was with 42.0 gr. According to my ballistics app on my iphone, doesn't go subsonic until a little after 1500 yards. Would like to try H4350 but can't find that anywhere. Did try Superformance but RL-17 works better with less powder used.