I was reading an article the other day about the 505gr 58 cal minie ball used in the civil war. During the war between the states. These guys were putting those slugs through 8 - 1inch thick pine boards at 600 yds.
I would say that was a favorite round in it's time.
Is there anyone out there that can do that with a 7 rem mag or a 30-06.
You won't see a lick of difference in the results, between the 7 rem mag and the 30-06.