I've got a marlin 44 mag and 45-70. Both are nice rifles. 44 mag holds 10, is light. While I have not shot a hog with 44 mag, I believe lots of people have. The henry's are very nice. But for me I didn't like the balance. But that is personal preference.
If you decide to shoot 45-70, I would start reloading. It is not cheap.