Very hard to shoot the barrel out on a 22 rifle or handgun. Rust or pitting would cause problems if the firearm was not cleaned or cared for properly. Known many of these 22’s rifles with many thousands of rounds fired and still shoot amazing groups. We would also have several high school rifle teams in our area of Pennsylvania. Many of those schools had rifle teams back into the 1950s.
I would be a rifle coach for one of those schools in the late 1980s. The majority of the rifles were Remington 40X rifles or Anschutz small bore target rifles.