I recommended that cal. because he says to 100 yards. Not past, just up to. The 30-30 round is very effective within that range, and is has a reasonable recoil. You can find the ammo at any walmart or mom and pop store.
Another advantage of the 30-30 in a "break open" gun, is that the 30-30 has a "rimmed" case... Imuch preferrimmed casesforthose types of firearms...
For a "hunting" revolver, i prefer a S&W 44 mag...
DM