wanting a little bit more than my cz 6.5x55 mannlicher can provide. looking to shoot 140 sierra's and 120&140 gr. barnes xlc's. what's the story on this round? good, bad? should i look at a factory round? problems i was having with my 338-06 did turn out to be a bad front scope ring and base on rifle. best group so far has been .254". thanks for the help!