The cow that produced meat of the consistency you describe,John, is extinct. There are a couple of longhorn herds near here but the meat is pretty good.
We have a tenderizer of the type you describe, seldom if ever used, but one we keep hung up for show has a head like an ax, the square grid-like side opposed by a thick wedge, I suppose to pound muscle or really recalcitrant bits of flesh. It is mounted on a hardwood handle.
Probably not quite heavy enough to stun a pig before hanging it up to cut its throat, but pretty hefty.