I'm looking at a used TC 50 Hawken today. The guy want $150 for it and claims it's in great shape. He has never fired it as he bought it at a garage sale thinking he would hunt but it never happened.

How do I give it the once over? How do you inspect the barrel if you can't remove the BP? How do you check the hammer springs? Just dry fire it and look for a good snap? Anything else I should be on lookout for?

Sorry for the rookie questions but I'm new to traditionals.