I have 2 1860 Army repros. I bought both of them "used" as "parts" guns. I replaced a few of the internals but was able to salvage most of the original parts. RUST, and in one case, rust bad enough to cause the bolt/trigger spring to break, is the enemy. For some reason, none of my BP guns had any kind of lubricant inside the action. My Remington was the only one I bought new, and it had factory lube. After shooting ANY of the pistols, I clean the barrel, loading lever, and cylinder completely. Third time I clean, I pull the nipples, and clean the cavity around them, and replace the anti seize compound. The action gets soaked in hot water, and then sprayed top down with WD-40 to flush out any water that might be hiding. After the dripping stops, a few drops of gun oil on the hammer screw, and in the bolt recess, and on the hand and channel..so far this has worked quite well. I have the correct screwdriver for the action screws, so dis assembly is not a big deal. If there is a lot of black coming out of the action after the WD-40, then I'll tear them down and clean them inside.