The problem is "hard cast" is a general term, and doesn't indicate what alloy was used to make the bullet.
Agree. Seems most casters using 92-6-2 call them hard cast. The alloy I get of this mix will test 15 BHN when air cooled. It passes the hammer test.
Most my casting though is done with WWs these days & the ones I mostly get are 12-13 BHN.