Cast bullets were, and always have been, built to do 2 things, penetrate & penetrate!! How & if they damage depends on nose profile. Expansion is usually zero or minimal but that is easy to change if you know how to do it, some do & some don't care, they just want penetration. It's next to impossible to make them expand like a jacketed bullet & anyone that claims they can is wrong. If you shoot pure lead you might but that's not a cast bullet really. Running cast bullets at 900-1100 fps & getting massive penetration is possible but it depends on nose profile & alloy & also what it comes in contact with, there's no free lunch. It's a given that cast bullets are built to penetrate & jacketed bullets are built to expand, both can cross over to some extent but there's always a trade off so pick your poison. Arguing what is best is senseless, use what you have confidence in, if you've had success with something for 30-40-50 years you probably have some pretty strong opinions on what works & how to get there, if your loads are bordering on failure, maybe listen to someone who's got a better hammer. Our choices of guns, bullets, powders, scopes, rangefinders, etc has never been better, use what suits you & help out the new guys that ask for it. If someone tells you several million Bison were killed with pure lead in a round ball at fairly pedestrian velocities..... buy him a CIGAR!
