Ruger has sn data on its website.
No. Your Mini-14 is a 183 series. The first three numbers in the serial number, followed by a dash, are the series code. Ruger made changes to the Mini-14 with the introduction of the 181 series. Many 180 series Mini-14 parts do not interchange with 181 and later series parts.
Good
Ruger has a sn function on their web site.
Semi automatic rifle made by Ruger.
You will have to contact Ruger or look it up on their website since you don't provide the full sn.
The Ruger Mini-14 Ranch Rifle marked as .223 can safely fire the .223 AND the 5.56 NATO military cartridge. The Ruger Mini-14 TARGET model should only fire .223 ammo- no 5.56 mm
100-200 usd In 2010-11 time frame, used but operating examples of the Ruger Mini 30 will sell between $350 and $500, depending upon overall condition.
The Ruger website, under Customer Service, has a downloadable owners manual for your Mini 14.
You can contact Ruger's customer service to find out.
If you go to Ruger's website you can download the manual for your mini 14 for free. It tells how to disassemble your gun in the manual.
580 is the newer version of the Mini 14 Ranch, minor engineering changes, improved accuracy, etc.