Like Pglasgow said, 70 grains and that 370 grain conical is a lot of down range thump. Put that in the right spot and a deer or hog (I never hunted hog.. when do we go ) should be freezer filler. The thing you need to remember, you're already putting a 1/2 inch hole into that animal without any expansion of the conical at all. I would avoid large bone structure area until YOU are confident in the penetration of them.

A friend of mine hunts deer with a T/C New Englander .50 caliber. All he shoots is 70 grains of Pyrodex RS and a 370 grain maxiball. He had yet to not drop a deer in sight of him. Last I talked to him, the further he has had to shoot a deer was 70 yards, it was complete pass through, and a blind man could have tracked the deer for the few yards it ran. Its all he every uses...

I shoot them out of my Staghorn also. Try some cornmeal under them. You might be able to bump the powder charge. I actually shoot them with 80 grains of Pyrodex RS and get real good accuracy. What lube are you shooting?

Good luck with that hunting. When you shoot a hog, be sure and tell me about it...