RE: new to muzzelloading.
You got two great guns at a very good price. There are several Hawken/Renegade shooters on this forum. Sabotloader has a couple of them. He shoots Nosler Partitions in them 250g. I like 300g Noslers. The Hawken would shoot better with loose Goex. I am not familiar with the Thunderhawk, so I will let others speak to it. Best Wishes on dialing your new rifles in. Chap Gleason