After about 150 rounds over the past two weeks the residue in my Uberti 1861 Navy frame was very gritty in texture. It may be from RWS caps, but I do not feel like shooting up a lot of Remington #10 caps to see.
One thing for sure if the gun had been grease packed it would have been an abrasive mess.
I also found out for sure Slixshot cones and RWS caps do not work together at all and before some one chimes in with "push down harder" the Gunslinger main spring was replaced with the original Semi-truck front end main spring and they still took a second strike almost all the time. I even tried, with the gun empty and the original main spring,, pulling the hammer back to full cock, carefully lowered the hammer to half cock and let it slip. Still had to make a second strike.
Gave reference to the Deity, a water retention structure and the male child of a female dog, (family friendly) replaced the Gunslinger spring and gave consideration to the problem since I have a good supply of RWS 1075 caps..
Usually one of the five rounds would work so it is a kind of semi dry fire never know when or if there would be a bang or a clunk. Call it "damp fire" I guess. Living in a rural area and having a range in the back yard helps.
Respectfully submitted
Bunk