Another vote for RL17. Dont load for the 30-06, but do load for the 300 WSM
and 25-06 (.06 case) and RL17 boosted velocity by 200 fps with each rifle. Dont know about the temp stability though.
The 180 E-Tips have an advertised BC of .523 vs the 180 AB's with a .507 BC. Not a big diff but everything counts. I find they shoot well.