I ran the 168 classic hunters over 2209 (when no RL17 was available) a few years ago and found the terminal performance on one stag in particular was terrible...I'm a big fan of the killing power of 140 bergers in my 6.5-284 so it may have just been a lack of speed.
RL-26 may give you the extra speed you need to get decent knock down but back then I switched from 168 bergers to 162 ELDs and bingo...I've just got some of the 150 berger classic hunters to try which should be interesting over RL17.
Cheers
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