A very big if. If 100 will make it to the core. If 100 will be even enough to destroy it in the first place. Quality in this case is better than quantity. Bijudama and FRS are both better in that regard.
The core is made of dense chakra,but the instance in which it was destroyed it was not directly hit,it was rather the impact force,or more precisely the telluric vibrations of the rocks that enveloped it.
Why you are so sure?Bijudama explosion alone can tear a mountain. Obviously combined FRS+Bijudama explosion made it to the core.