Castnblast is right, a 175 gr minimum and 2000 ft lbs at 100 yards for Bison what the law says. A 7mm-08 or 7x57 would be legal along with the 180 gr Woodleigh in a 270 Win.
I'm still wondering about the difference in wound channels using Partitions between the 3 rounds, 175 gr 7x64, 180 gr 30-06 and 200 gr 8x57. There may me no real difference maybe. Part of the reason I have been leaning towards the 7x64 is there are some really good lighter weight hunting bullets to use when bears aren't an issue.
