most minis are .223 caliber aka 5.6 NATO
<><><><><>
Although similar, the .223 Remington and the 5.56x45 are NOT the same cartridge. A rifle chambered for 5.56 can shoot .223 safely. The reverse is not true- a rifle chambered for .223 MAY be unsafe with 5.56 ammo- it has a slightly longer cartridge case, and is loaded to higher pressures. Safe bet is to check the caliber marked on the firearm, and stick with that.
AR15, M16, M4, Ruger Mini 14
Depends. If you mean the Ruger Mini-14 or Ranch Rifle, yes, you can. It is chambered for .223 and 5.56x45 ammo. If you read the owner's manual (available on the Ruger website) it will tell you that on page 13. The Target Model is ONLY for .223. Of course, the 6.8mm and the Mini-30 use different ammo entirely.
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
If that is what is printed on your barrel. Most will fire 5.56 x 45. They are not the same.
The Ruger Web site says the Mini-14 Ranch Rifle and the Mini-14 Tactical Rifle, can be used with either the .223 or 5.56mm round: Mini-14 Target Rifles ONLY accept .223 Rem. ammunition. 5.56 NATO cannot be used in this model. Probably due to tighter chambering dimensions for accuracy.
The Ruger website, under Customer Service, has a downloadable owners manual for your Mini 14.
580 is the newer version of the Mini 14 Ranch, minor engineering changes, improved accuracy, etc.
$350 to $800, depending on WHICH Mini-14, and condition.
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.
The original, factory Ruger Mini 14 folding stock used wood. The folder itself was steel, and was an 'underfolder' design, similar to the type used by the AKS-47, AKMS, etc.
You can contact Ruger's customer service to find out.
Ruger has sn data on its website.