Hornady makes a PA Conical that is a lot like a ball-et but I never shot them.

https://www.hornady.com/shop/?ps_session=a9a9434ae62c4237b559bfdf54200291&p age=shop%2Fbrowse&category_id=5dadafd809b601a6 7c77adcd3834ac1d

they are only a 240 grain but were basically made to shoot out of slow twist rifles instead of roundball. I have never shot them.