Yes there are the same number on the side of the barrel that have been posted on gunbroker. I read that it equates to trap door loads. That's fine by me, trapdoor loads have had no problem passing through american bison and other such animals. It may not be intended for the big three in Africa but would do plenty on damage on a large bear or any other big game animal. I will mostly hunt feral hogs with mine, if I ever make it to Africa for something in those top three I have a Rem 798 in 458 win mag that will do just fine.
I hope to have more pictures soon of sucessful hunts with my double rifles.