I wonder if some Remington 405 grain .458 that look identical to that bullet are built the same way? I shoot them in an orange Knight Sabot. And while they are accurate, I have never hunted with them. They were one of those ... good deal bullets and wanted to try them in other rifle. I think the bullet I have was made for a 45/70 Government rifle.

That separation of copper jacket and core is very interesting.