The 210 bullet is a great match with the .338Fed, and a fantastic elk bullet.
The 160 was invariably meant as a deer bullet since its such a light-weight projectile for the .338 bore. Why not build some insurance into your ammo choice by using a bullet specifically good for elk, instead one that's too light?
Sometimes enough 'mass' is more important than too much velocity.
The 210er with 2450-2550 fps ought to be plenty to punch through an elk brisket.
