The manual for every Ruger I own recommends dry-firing to become acquainted with the gun. My 22/45 has a warning about dry firing without a pin in place-it says to do so will leave the gun inoperable. I can say that it is correct, it did screw up my pistol-nothing a quick filing couldn’t fix!
Are you referring to every Ruger manual that is for a rimfire or centerfire? I am no 'gun oracle', but I think that usually there is a difference .
Glad you fixed your 22/45.