No, I'm not looking for shrapnel. My question is how do I make it so that my unit doesn't die by the slightest bit of it because of it's crushing power! I find that the brain-bot seems to die less often by it (unless it's a large piece).
I'm thinking of reducing the weight of the actor...

I didn't understand much of what you said, but if you want to make a unit survive more effectively an explosion (like a frag grenade explosion which carries shrapnel), you have to give it higher GibWoundLimit and GibImpulseLimit, you can also change it's structural integrity in the CopyOf of the material it's made of, you can also add attachables (like armor, helmets, etc.) to make them absorb the damage instead of the actor until they break.

If youre having problems with a head gibbing with the lightest touch of a feather and the actor has a helmet, check that JointStiffness on the helmet is set to 0.

Yup major got exactly what i meant. Thanks.