Each has areas where they'd have advantages and disadvantages versus the other.
the 220 swift is considered a long action.
Short
Short
Go to Ruger's website. They have a sn dating function you can use.
Some of the fastest- the Ruger .204, the .220 Swift, and the 30-06- but only if the 30-06 is shooting the Remington Accelerator. That is a sabot cartridge that fires a small .25 caliber bullet at roughly 4,500 fps.
You can look up the serial number on Ruger's website.
Fastest in what way? Bullet that travels fastest? That would be a pistol chambered for a very fast rifle cartridge, such as the 22-250, .204 Ruger, or .220 Swift. Fastest firing? Pistol version of the American 180 submachine gun- it fires .22 long rifle ammo at rates of nearly 3000 shots per minute.
22-250, 220 Swift, 243, 6mm Rem, 25-06, 308. Other versions of the 77 were in MANY other calibers.
220 8 x 2 = 16 and 17 x 6 x 2 = 204 and 16 + 204 = 220
Neither. Provide a few more parameters and one or the other might be "better" based on what you want to know.
1935
Usually, no. the .220 Swift cartridge is quite a bit longer, and has a larger cartridge head.