I picked up a jug of RL16 for a new 243 I put together. It's the only powder I've run through it so far with three different bullets. By bullet drop between 100 and 300 yards I'm averaging 3050 fps with the new sierra gamechanger. I haven't put many over the chrono yet due to the barrel having less then 100 rounds down it. It's consistent and extremely accurate with 70gr Tipped Varmageddon's. I've found with the newer de-coppering powders they tend to be 'dirty,' meaning there's more powder in the bore when cleaning, but hardly any copper to speak of.
70gr Varms, 45gr 3334
87gr Vmax, 41.5gr 3031
This was at less then 30 rounds down the barrel.