So, WHY is the RAR so accurate in so many chamberings, right off the shelf? What is the secret sauce? What did Ruger do right, while controlling costs?

I am going to guess that smart engineers used modern precision CNC and QA/QC throughout the build to produce a rifle with a stiff action, an excellent bore, a crisp trigger, proper headspace, and minimum SAAMI spec on the chamber, all controlled to extreme tolerances, with a stock that does not interfere with barrel harmonics...

but figured I would ask...