RE: field cleaning black diamond xr?
I never had to clean the other two. I have a Black Diamond XR and it can be a pain to clean like any in line back powder rifle. Especially if you have a scope on it. Be sure and get a deluxe breech plug wrench as soon as possible. Also be sure to check your breech plug while your shooting at the range from time to time. Although I played by the rules and greased the plug and checked it to loosen it, it still got stuck on me...