Federal/Speer is owned by Vista Outdoors and already tested this for you. Jk, they did it for law enforcement as the largest ammunition company in America. What do they know as a sister company of ATK which puts rockets in space...
https://le.vistaoutdoor.com/wound_ba...omparison.aspx
Contrary to what people think, when metal is harder it is becomes more likely to shatter. Ie the strongest chain is Grade 120. Grade 120 lifts more than any other Grade, but nick it or physically attack it? Destroyed. So Hard Cast usually gets thrown around like it's depleted uranium. It ain't. Hard Cast easily shatters (break up) on hard surfaces. Then you just lost your mass forward of the break.