Hi from Germany.
I'm hunting for some time now with cast bullets in my 45/70 buffalo classic rifle. Until now I used smokeless powders with good results but now I got my hands on some Triple Seven FFG. Shooting that stuff is really fun but are these loads(60 grs. with a 450gr. slug )really enough to hunt with?
Until now I was used to some hotter loads.

What are you hunting?

There aren't many animals that will keep a 450 gr cast bullet inside of them, even when launched at BP velocities, which are pretty much on par with the 475 Linebaugh revolvers, and folks are happy with them.

I usually hunt wild-boar in the woods with the 45-70. Normally shooting ranges are from 45 to 100 yards.

Sounds like pork chops for dinner!

There isn't a pig alive that won't succumb to a 45/70 cast bullet at B.P. velocities. You do need to keep in mind that fine smelling cloud of smoke when considering a quick follow up shot. Things can get pretty interesting hunting pigs as I am sure you well know.