My guess is an armor piercing bullet out of a 30-06 will penetrate armor better than a solid from my 500 Jeffery. Of course the Jeffery might push the vest well into someone's chest, be kinda painful. If I was looking for penetration from an African rifle caliber, I'd shoot a 350g .375 caliber solid out of a 375 or 378 Weatherby. Of course the 50 BMG with the right bullets was built for just that application.
