US869 is great for the rum. I’m at 3250 160 AB fed 215 26” and I got a couple grains yet to go until book max. 869 is a cooler powder and will save on barrel life for this round which is important the only thing is it’s not temp stable. I have yet to try my Retumbo or RL 25 for this yet and may get to it too. If you want heavier you could go with the 175 Berger’s over the 168’s and this thread has got me thinking of trying either one too.