What 6mm cartridge and velocities are causing you they bullet failures?Personally I'd use an Accubond or Partition, I've had too much bad luck with 6mm bullets failing on deer.
The absolute last thing you should use is a VMAX of any weight. You won't get decent penetration, and none if you hit bone.
Many years ago a fellow suggested that I shoot his steel spinner target at 100 yards with my 6mm Remington. It was loaded with the Hornady 75 grain VMAX load that I use for varmints. I shot and he chuckled because he thought that I had missed, the plate barely moved.That is absolutely not true.
I have dumped a pile of deer and hogs with 87-grain VMax bullets out of my 6X45. Ranges from 10-350 yards and even hits in the dreaded armor known as “shoulders”. Never had a problem with penetration or wound channels.
For the 6ARC, I would take advantage of the faster twist and shorter cartridge to shoot 108 grain ELDMs. They flat-out hammer deer.