Not currently cataloged.
100-1000 USD depending on specifics
Probably 1.0-1.5 MOA, depending on WHICH Ruger rifle.
Ruger's web site has extensive sn data.
Yes.
If the ruger site comes back up, you can check there sn database
No, .22 caliber and 6mm are not the same; they refer to different bullet diameters and types. The .22 caliber typically measures around 5.6 mm in diameter, while 6mm refers to a bullet that is approximately 6 mm in diameter, such as the 6mm Remington or 6mm Creedmoor. These calibers are used in different firearms and for various purposes, including target shooting and hunting.
22-250, 220 Swift, 243, 6mm Rem, 25-06, 308. Other versions of the 77 were in MANY other calibers.
It was bought in 1971, i dont know much about it, it was handed down to me by my great grandfather. it looks to be in good shape but i cant find any info on it on the internet. its my first rifle.
6mm is equal to a 2 gauge.
6mm = 6/1 mm.
4mm-6mm in inches = -2
6mm is thicker than 2mm. It has a greater thickness of 4mm.