Hornady AMAX vs Sierra SMK's

AMAX are an excellent bullets. Shoot them in .308 and 6.5 Creedmoor and used to in 300WM when I had it. You will have to try them against the SMK to see which your rifle likes best but don't worry about quality.
 
I've had very good consistencies with both. Just that my stick likes the amazes better.. I would get a box of both and shoot them to see what your gun likes better and decide from there
 
They are both high quality match bullets. Nothing to chose between them quality-wise.

IME the SMK seems to be more jump tolerant than the AMAX. The SMK's seem easier to get to shoot acceptably well in a wider range of jump. The AMAX's need some jump tuning to get them to shoot, but once you find it, they shoot.