Just thought I'd show a 328gr hard cast in out of the box condition and after being shot through a 6x6, a 4x4 and a piece of 3/4" plywood. It went through all that and was just barely in the ground behind the wood.
Really not much change to the bullet at all. Retained weight is 314gr.
That is exactly what a hard cast should look like after impact. Break a shoulder on a large game animal, that's good. The Hollow point that some think is good for the same purpose will make a large surface wound and no penetration and no bone breakage. What ever that bullet is formulated from is good, too hard and it would shatter, not good. That bullet is elk, moose and bear medicine!!!!
I use a 325 grain hardcast bullet with a wide metplate in my 45 Colt loads for my Old Model Vaquero. That bullet with a healthy dose of Blue Dot or H110 travels straight through a Whitetail or a large Hog leaving a hell of a big hole. Bones don't seem to even slow it down. I never recovered one but my guess is it would look like that one. That would be my Go-To Bullet for a 454 Casull.
When you want/need to get deep, you need something solid and tough. Hollow points, soft points, soft alloy lead, ... are perfect for soft skinned game but when dealing with tough animals that have teeth and/or claws and a habit of not respecting our place on the top of the food chain, it behooves the shooter to make sure he can get deep enough to hit the STOP button. When you are looking for penetration, you don't want mushrooming or expansion and that bullet looks exactly like you'd want it to turn out. A cast bullet made of a hard alloy's been doing the trick for a LONNNG time.