I just was testing the 162 ELD-X in my Jarrett 280 AI in the last few weeks, and what I noticed was these bullets shot best in my gun right at the lands to +.020" touching vs. going away.
That said I felt these wouldn't stabilize well enough since my barrel is a 1:10". I did run them out to 700 yards while fire forming some RWS brass and was surprised they performed as well. You might have better luck then I saw, but try H4350, or IMR 4831 both of those showed good speed in my rifle w/the 150-160 grain weight bullets. RL-22 had the most velocity, and worked well with the 160's.