krochus,If I may add one more bullet for you to consider,look at the nosler accubonds as I've just finished testing the 150gr in a couple 3006s and a 308,and am impressed.In my 06 they shoot half inch groups,with best at .392 for three shots,and recovered ones are expanded well with good weight remaining.So maybe the 180gr would do well in the 300mags and be good compromise between the B-TIP and Partitions.