Guy,
In my 2 - 300WSMs I've got a load using the 190gn LRAB with RL26 and am quite happy with it. I have not taken any game as of yet - maybe this year. I too didn't have good luck with the 200 AB in my Sako 85 300WSM but the 190 LRAB shot very well. If your interested in trying some 190 LRAB - PM me.
Bill