That's great, Ray! I love reading a success story. I need to give credit to Kirby for the excellent photos of both the rifling damage in this thread and of the leade in the linked thread. Hopefully yours shoots even better after deburring the barrel port and knocking off the sharp edge at the start of the rifling. Fortunately those two things a pretty quick and easy compared to a chop and crown.
Hi Ray, yes it sounds like you have the right stuff. The label reads "non-embedded bore cleaning compound". J-B bore paste just seems to be the popular term for it. I'm not really sure where Flitz falls in terms of fineness of polish in relation to the two J-B products. I have heard of folks using it in place of the J-B bore paste but that only loosely implies it is more similar to that one. I think it would be fairly easy for you to find out. Put some of each on a cotton cloth (old T-shirt scrap) and scrub a highly polished piece of metal. If the J-B dulls the surface and the Flitz preserves the mirror finish, then you know. Might be able to substitute a piece of glass for the polished surface. It would be easy to compare any dulling. Regarding the cleaning rod, I checked the Cabelas link and that one looks fine to me. Firstly, it is a ball bearing type. Secondly, J-B is non-embedding and you're working from the breech end so the rod material isn't super important. For example, for .177 I have a brass rod. Brass is relatively soft which means abrasives can embed into it. I definitely wouldn't want to use it to clean from the muzzle end or where there is any opportunity for small microscopic grit to get introduced. But I have no qualms about working from the breech end with J-B.
I have a TKO off of a barrel right now. If I can find a brass screw in the garage, would toothpaste be alright for a quick crown touch up?
Seems like no matter how much I go at it with a brass screw, one side of the barrel just won't get where I can see the grooves and lands clearly cut into the edge of the crown when looking straight down the barrel
Or maybe my technique was bad...it was surprisingly difficult to do, the cleaning rod kept wanting to bend.
Taso, since Ray is using the brass screw technique, it should not matter if the bore is slightly off center to the OD. Running the drill in a random figure 8 will help develop a uniform bevel.