I figured as much, but then I read that apparently ordinary discrete resistors are damaged (as in their value changes permanently by more than 2%) from 0.1 seconds of 100 g acceleration. It's possible that IC's are more resilient, because of the much higher surface/volume ratio of the "components" on a slab of silicon (less inertia and higher stiffness), or that even slight change in the properties and values of the components from the acceleration wouldn't be any concern because circuits are designed to function with a certain tolerance level for the values. My main concern is the sensitivity of the crystal oscillator to accelerations, because a hundred ppm change in values would render it useless.
Anyways, I'm keeping acceleration at around 50 gs (for 20 seconds), but things would be easier if I dared to push it to 100 g's or more instead. I guess this post was more thinking out loud than anything, but if anyone else has any input on possible acceleration/shock tolerances for components I'ld appreciate it too.