One of the great things about the CM is that it pushes 140's at a very modest speed, and thus doesn't stress the cup & core bullets with high impact velocities. I'd feel good using any of the bullets you mentioned for steel and hunting animals to 500 yds, though some of them are running out of poop for elk at 500 yards. The Sierras wouldn't be my first choice, but I'd feel fine using them. A lot of guys shy away from them, but I have seen good things from them on animals.
