I purchased 3 black powder revolvers off of a friend that found them while moving. They were his dads, but he is not into revolves so i bought them for $20 a piece. They are Armi San Marco replicas. They have not been fired if at all, in a very long time. they are all single action. When I try and cock the hammer back on one, there is a noticeable spot where it gets very tight and then moves freely again. The hammer falls all the way to ignition when the trigger is pulled. Another one is just very hard to cock, but still falls freely once the trigger is pulled. Do these just need a little tlc and good cleaning? Or are these replicas not worth shooting? Thanks guys