Ruger 8 3/8 .44 mag revolver would be my first choice (mostly because I own one). The second choice would be my Ruger 96 lever action .44 mag (again, because I own one).

I've taken a hog with a Colt Anaconda .44 mag revolver - was about 15 years ago. It was a kick in the pants - I recommend a revolver if you can swing it. Using a scope is cheating.