what you are shooting will work fine. i have used the 150s out of my 7 mag with good success. that being said i am going to a 338 win mag this year just to get a little more knock down power. the last 2 years the bulls i shot got up after being hit solid. both times it was a killing shot but just didn't have the impact to get them on the ground to stay. the tissue damage inside the chest cavity was not that great with the 150 bullet. next year i will be shooting 210 nosler partition bullets.