The intention to to provide a solid for large and dangerous game. The custom alloy is heat-treated to a BHN of around 20. This heat-treated alloy does not fragment nor mushroom or smear.

You are absolutely correct, penetration must be compared to something. I think John Linebaugh's penetration tests are the comparison. The penetration test shows the bullet's ability to remain stable while traveling through wet media. This is what I'm most interested in because stability while traveling through muscle and bone is what really matters.

I have a 45-70 bullet design and alloy specifically for large and dangerous African game. It's a 550 grain WFNGC in a heat-treated custom alloy. A very similar design has taken the Big Five. The muzzle velocity is 1550 fps. Currently, Randy Garrett makes the ammo. I will offer the hard cast bullets and also loaded ammo for sale very soon.