I have not found a hollow rod of a size and weight that would meet walking stick criteria that would take such a punishment.
Let me know if you find one that is strong enough.
Nomad... been beating things with sticks for a long time.
I have used several fiberglass and aluminum poles that will take the full blow, usually from surveying and instrument support companies. I used a particularly sturdy fiberglass staff to hold up the magnatometer head on a system from Geometrics. The blow will not be as strong because of the weight of the staff. Similar to a PR-24 and a Tonfa, the sting is there but the damage is limited.
Respectfully,
Jerry