They stabilize fine in a 1-10 twist, which is what 99% of .30-06's have had for over a century now.
I've shot a pile of game with the 200 Partition in the '06, going back to the 70's when all that was available was the semi-spitzer (or semi-round-nose). It definitely penetrates deeper than the 180 Partition, and about as deeply as any other expanding bullet--except the 220 Nosler Partition.
