The 180's are definitely the best choice. I have seen Winchester Fail Safe's do the trick quite nice. I also have seen the Nosler Partions do the deed in one shot, NO problem. I used to shoot a 7mag and two years ago shot a bull with 160Gr Nosler's. The bull literally was knocked off his feet at 100yds and was probably dead before he hit the ground. Just make sure you place your shot well and you should have no problems. I would sum it up and say use a premium bullet( Fail Safe, Nosler Partition, Barnes X, Trophy Bonded Bear Claw, Swift Scirocco, etc.)