The way i see it to keep people from leaving the sniper "class" behind on focusing on MAX the sniper rifle should be something like :
1-2 Headshots for light armors
2-3 Headshots for med armors
8-12 Headshots for MAXs (Assuming the Bolts have AP capabilities)
And of course this is considering headshots require a good amount of skill and you can't sniper someone from 5000yards away.