Interesting little gun. They came out in '65 as I recall. In the late 60s, all Smiths and Colts, especially snubs were hard to come by, so other mfgs, especially foreign, turned out near-clones. Quality was variable. Charter may have been the best of an iffy bunch. See article in '69 Gun Digest.
I note the following on Charters: The yoke assembly is thinner than the J and is held on by a short screw with a washer that is easy to lose. The ejector rod assembly is haphazard and the collar on it serves as the front crane lockup. The end of the ejector rod is screwed on and has to be tightened often. The cylinder latch also has many parts including a tiny spring that is also lose-able. I found that the cylinder/crane assembly can be switched from gun to gun without adjustment. Odd.
Frame is 2 piece unlike the Smith and Colt 1-piece. The hand is much thinner than the J, it looks like a blade from a small penknife, it is that thin. The sights are big and clear unlike the early Js. Grips are NOT interchangeable with Js. Trigger pull is stage-y but can be managed.
I would shoot only standard-pressure wadcutter or service-style ammo in it, forget about +Ps (Never thought I would ever say that!). I would use a CA if could not obtain a better gun. Sorry for being wordy,but I've had some experience with CA. Hope this helps.