I'll be dusting off my thunderhawk sometime in the next couple of weeks as well. It was new to me last year (handed down from my grandfather). It took a few load combinations to find something that printed well, which turned out to be 70gr FFF and 250gr Shockwave. Others tried: cheap shot, xtp, maxi-hunter. I'd still like to try the Buffalo SSB or find a conical, but at least I have a load I can fall back on now.

I took it out a few times, but ended up not taking anything with it. Hopefully this year I'll get another chance to see what it can do, then I might have to break my roundball gun back out.