I'd say that kutter's thought that heat treating makes a world of difference in the same grade of steel is 100% correct. I've had hardened steel that was near impossible to drill without destroying a HSS drill bit that cut almost like cheese after annealing. Maybe someone would like to anneal a Model 21 action or Model 70 receiver to confirm it.


A true sign of mental illness is any gun owner who would vote for an Anti-Gunner like Joe Biden.