Wow, I really do appreciate all the help. I wasn't aware of how much stuff I would need LOL!!! I will try a couple of different loads starting with 80 grain and maybe a few 100's to see what happens. However, I will check the manual to see what the rifle can handle.
I'm also going to go with the powder over the pellets. My dad recently bought a traditional black powder rifle and hasn't shot it yet, so I was wondering how the two rifles would differ. We hunt in an area that has lots of thick woods and the longest shot any of us will take will be in the 50 yard range. That means we will not be scoping any of these rifles. I would have never of thought to clean the rifle prior to shooting, but that sounds like a good idea.
I reprinted all of this stuff off and I'm going to study it tonight. Thanks again for taking the time to help a newbie.