I'm in the process of switching over to RL-16 and RL-26 for everything I reload for, which isn't a whole lot- 270 Win, 30/06, and 338 Win Mag. Used to be I'd use only H4350 and H4831, but with H4350 being impossible to buy, I'm planning to use RL-16 to take its place. I just recently bought 5 pounds so I'm really hoping it works out. The RL-26 I tried in my 270 Win. and it got me 250 feet per second more than I get with H4831, and as good, or better accuracy. So I won't be buying any more H4831 either.