Let me see if I can make things clear with mine. The inside of the barrel was not coated with ceracoat, it had what was apparently over spray in it. The crown was coated and I think the barrel wasn't plugged when sprayed leading to what was inside. I scrubbed the bore clean with a bronze bore brush. It hasn't keyholed since but there was no improvement in accuracy which was and still is very poor compared to my other 22 handguns including single six's and a couple those "junky rough riders". I didn't expect it to shoot with the SS's but did expect performance equal to a RR. No where close so I lapped the crown to no avail. Then I dug out the precision measuring tools and found everything to measure like it should. I did not send it back to Ruger because I had already read posts from people that had done so and it was returned with a note saying theirs was "within specifications" and nothing was done so why bother? The only thing I can offer as to why the accuracy is poor is because the rifling appears very shallow and might not provide enough grip to stabilize the bullet. I have shot mini-mags, CCI-SV, Aguila, Federal, and even some Winchester and it all performs the same. All the shooting was done off a sturdy bench with a good rest at my gun club range to get the best results I could.
Before buying mine I shot one owned by a grandson. It was pretty good in the accuracy department, the silver finish didn't look too bad, and it had after market grips which made it feel right so I bought one in silver, changed the grips, and took it to the range for a big disappointment. I know all wranglers are not bad, just that mine is and I won't roll the dice with another.