I bought one of these bad boys on clearance a while back (practically stole it, but that’s another post): http://www.sausagesource.com/catalog/ce-mt4010.html
This machine will definitely do the job; it’d probably tenderize a brick.
Alton Brown showed that very model on ‘Good Eats’ a few months back!
Did you get that meat cuber for tenderizing game? That cuber will be in demand if TSHTF