Bumped into this article on RL-17.
http://www.6mmbr.com/reloder17.html"RL-17 is a slow powder, very roughly speaking, somewhere between H4350 and H4831"
"Reloader 17's unique penetrating burn-rate regulator smooths out the pressure curve, allowing RL17 to maintain high energy for a longer period of time."
This is billed as being very different than other powders. I look forward to giving it a try. Last I read it will be introduced to the market in March.
