I have a 3" RB HB model 64.
I have no idea of the round count - a bunch. Never had a bbl problem. Like all the other old smiths I have,or have owned, I do remove that screw when cleaning to make it simpler for me. I do check all screws and make sure they are snug...especially after heavier loads, extended rds counts.
This is as automatic as taking a dry toothbrush and brushing under the star / extractor while out shooting. Especially a dirty loading...given enough rds downrange one will get a bind. Normal...some guns will go more rds than others is the difference.
Then again I'm the type to notice mom's tires before I get in to move it into garage, and notice a tire is low...or suspect so. Just wired that way I guess.