Yes, they have it listed on their web page, but it has been dropped from their catalog in the 77R bolt action. I just received a copy of the 2005 catalog, and it's gone, except in the Ruger #1. But, there should still be some out there/available. It's just a little difficult to find 'em sometimes. They do turn up on the gun auction websites quite frequently - if not Ruger, then Winchester or others in 7x57. It's still a fairly popular cartridge. Just takes a little time to locate one.
Of course, another option is a rifle chambered for 6.5x55 Swede. It's available now from
Ruger, Winchester, CZ, and others. Standard cartridge uses a 140gr. bullet which is the
same as used in most 7mm Mauser loadings. It's a very mild cartridge too - I think less recoil than the 7mm, and just as effective.