The 6.5x55 won't run through a short action unless you limit yourself to 120gr bullets or lighter.
That is one of the reasons behind Remington developing the .260. They wanted to fit that power class into a short-action rifle.
As for building...
Unless you've got a good deal on a used action locally, you're probably going to wind up buying a complete rifle and rebarreling it. It'll be cheaper to find a rifle in the caliber you want right off the bat unless you've got a specific reason for wanting to build.
The CZ550 is available in 6.5x55. I think they're currently the only maker chambering the cartridge right now. Remington and Ruger have in the past though.
You can get .260Rem from Remington and Ruger. Probably Savage as well but I don't have their catalog handy.
If they've got one on the catalog, your cheapest option (and still a very good rifle) would be a Savage in .260
That is one of the reasons behind Remington developing the .260. They wanted to fit that power class into a short-action rifle.
As for building...
Unless you've got a good deal on a used action locally, you're probably going to wind up buying a complete rifle and rebarreling it. It'll be cheaper to find a rifle in the caliber you want right off the bat unless you've got a specific reason for wanting to build.
The CZ550 is available in 6.5x55. I think they're currently the only maker chambering the cartridge right now. Remington and Ruger have in the past though.
You can get .260Rem from Remington and Ruger. Probably Savage as well but I don't have their catalog handy.
If they've got one on the catalog, your cheapest option (and still a very good rifle) would be a Savage in .260